diff --git a/apps/app-frontend/src/providers/setup/server-install-content.ts b/apps/app-frontend/src/providers/setup/server-install-content.ts
index c2556c8937..3e6ea39a47 100644
--- a/apps/app-frontend/src/providers/setup/server-install-content.ts
+++ b/apps/app-frontend/src/providers/setup/server-install-content.ts
@@ -1,6 +1,5 @@
-import type { AbstractModrinthClient, Archon, Labrinth } from '@modrinth/api-client'
+import type { Archon, Labrinth } from '@modrinth/api-client'
 import {
-	addPendingServerContentInstalls,
 	type BrowseInstallPlan,
 	type BrowseSelectedProject,
 	createContext,
@@ -10,12 +9,10 @@ import {
 	injectModrinthClient,
 	injectNotificationManager,
 	type ModpackSearchResult,
-	type PendingServerContentInstall,
-	type PendingServerContentInstallType,
-	readPendingServerContentInstalls,
 	readStoredServerInstallQueue,
-	removePendingServerContentInstall,
-	writePendingServerContentInstallBaseline,
+	useServerContextRuntime,
+	useServerPanelSync,
+	waitForServerContextRuntimeReady,
 	writeStoredServerInstallQueue,
 } from '@modrinth/ui'
 import { useQueryClient } from '@tanstack/vue-query'
@@ -28,7 +25,6 @@ type InstallableSearchResult = Labrinth.Search.v3.ResultSearchProject & {
 	installing?: boolean
 	installed?: boolean
 }
-type PendingServerContentInstallInput = Omit<PendingServerContentInstall, 'createdAt'>
 
 export interface ServerModpackSelectionRequest {
 	projectId: string
@@ -90,114 +86,6 @@ function readQueryString(value: unknown): string | null {
 	return typeof value === 'string' && value.length > 0 ? value : null
 }
 
-function getQueuedInstallOwnerFallback(project: InstallableSearchResult) {
-	if (project.organization) {
-		const ownerId = project.organization_id ?? project.organization
-		return {
-			id: ownerId,
-			name: project.organization,
-			type: 'organization' as const,
-			link: `https://modrinth.com/organization/${ownerId}`,
-		}
-	}
-
-	if (!project.author) return null
-
-	const ownerId = project.author_id ?? project.author
-	return {
-		id: ownerId,
-		name: project.author,
-		type: 'user' as const,
-		link: `/user/${encodeURIComponent(ownerId)}`,
-	}
-}
-
-async function getQueuedInstallOwner(
-	client: AbstractModrinthClient,
-	project: InstallableSearchResult,
-) {
-	const fallback = getQueuedInstallOwnerFallback(project)
-
-	try {
-		if (project.organization) {
-			const organization = await client.labrinth.projects_v3.getOrganization(project.project_id)
-			if (organization) {
-				return {
-					id: organization.id,
-					name: organization.name,
-					type: 'organization' as const,
-					avatar_url: organization.icon_url ?? undefined,
-					link: `https://modrinth.com/organization/${organization.slug}`,
-				}
-			}
-		}
-
-		const members = await client.labrinth.projects_v3.getMembers(project.project_id)
-		const owner =
-			members.find((member) => member.user.id === project.author_id)?.user ??
-			members.find((member) => member.is_owner || member.role === 'Owner')?.user ??
-			members[0]?.user
-
-		if (owner) {
-			return {
-				id: owner.id,
-				name: owner.username,
-				type: 'user' as const,
-				avatar_url: owner.avatar_url,
-				link: `/user/${encodeURIComponent(owner.username)}`,
-			}
-		}
-	} catch {
-		return fallback
-	}
-
-	return fallback
-}
-
-function getQueuedAddonInstallPlans(
-	plans: Map<string, BrowseInstallPlan<InstallableSearchResult>>,
-) {
-	return Array.from(plans.values()).filter((plan) => plan.contentType !== 'modpack')
-}
-
-function getQueuedInstallPlaceholder(
-	plan: BrowseInstallPlan<InstallableSearchResult>,
-	owner: PendingServerContentInstallInput['owner'],
-): PendingServerContentInstallInput {
-	const project = plan.project as InstallableSearchResult & { slug?: string | null }
-	return {
-		projectId: plan.projectId,
-		versionId: plan.versionId,
-		contentType: plan.contentType as PendingServerContentInstallType,
-		title: project.name ?? 'Project',
-		versionName: plan.versionName ?? null,
-		versionNumber: plan.versionNumber ?? null,
-		fileName: plan.fileName ?? null,
-		owner,
-		slug: project.slug ?? plan.projectId,
-		iconUrl: project.icon_url ?? null,
-	}
-}
-
-function getQueuedInstallPlaceholderFallbacks(
-	plans: Map<string, BrowseInstallPlan<InstallableSearchResult>>,
-) {
-	return getQueuedAddonInstallPlans(plans).map((plan) =>
-		getQueuedInstallPlaceholder(plan, getQueuedInstallOwnerFallback(plan.project)),
-	)
-}
-
-async function getQueuedInstallPlaceholders(
-	client: AbstractModrinthClient,
-	plans: Map<string, BrowseInstallPlan<InstallableSearchResult>>,
-) {
-	return Promise.all(
-		getQueuedAddonInstallPlans(plans).map(async (plan) =>
-			getQueuedInstallPlaceholder(plan, await getQueuedInstallOwner(client, plan.project)),
-		),
-	)
-}
-
 export function createServerInstallContent(opts: {
 	serverSetupModalRef: Ref<ServerSetupModalHandle | null>
 }) {
@@ -220,6 +108,7 @@ export function createServerInstallContent(opts: {
 	const isFromWorlds = computed(() => browseFrom.value === 'worlds')
 	const isServerContext = computed(() => !!serverIdQuery.value)
 	const isSetupServerContext = computed(() => !!serverIdQuery.value && !!serverFlowFrom.value)
+	useServerContextRuntime(serverIdQuery)
 
 	const serverContextWorldId = ref<string | null>(worldIdQuery.value)
 
@@ -246,7 +135,6 @@ export function createServerInstallContent(opts: {
 		initialServerId ? getCachedServer(initialServerId) : null,
 	)
 	const serverContentProjectIds = ref<Set<string>>(new Set())
-	const serverContentInstallKeys = ref<Set<string>>(new Set())
 	const queuedServerInstalls = ref<Map<string, BrowseInstallPlan<InstallableSearchResult>>>(
 		new Map(),
 	)
@@ -262,6 +150,10 @@ export function createServerInstallContent(opts: {
 	const isInstallingQueuedServerInstalls = ref(false)
 	const queuedInstallProgress = ref({ completed: 0, total: 0 })
 	const effectiveServerWorldId = computed(() => worldIdQuery.value ?? serverContextWorldId.value)
+	useServerPanelSync({
+		serverId: serverIdQuery,
+		worldId: effectiveServerWorldId,
+	})
 	const serverBackUrl = computed(() => {
 		const sid = serverIdQuery.value
 		if (!sid) return '/hosting/manage'
@@ -307,11 +199,7 @@ export function createServerInstallContent(opts: {
 					.map((addon) => addon.project_id)
 					.filter((projectId): projectId is string => !!projectId),
 			)
-			const keys = new Set(
-				(content.addons ?? []).map((addon) => addon.project_id ?? addon.filename),
-			)
 			serverContentProjectIds.value = ids
-			serverContentInstallKeys.value = keys
 		} catch (err) {
 			handleError(err as Error)
 		}
@@ -353,14 +241,12 @@ export function createServerInstallContent(opts: {
 				serverContextWorldId.value = null
 				serverContextServerData.value = null
 				serverContentProjectIds.value = new Set()
-				serverContentInstallKeys.value = new Set()
 				setQueuedServerInstallPlans(new Map())
 				return
 			}
 
 			if (sid !== prevSid) {
 				serverContentProjectIds.value = new Set()
-				serverContentInstallKeys.value = new Set()
 				queuedServerInstalls.value = readStoredServerInstallQueue(sid, wid)
 				serverContextServerData.value = getCachedServer(sid)
 				try {
@@ -476,6 +362,13 @@ export function createServerInstallContent(opts: {
 		const queuedPlans = getStoredServerAddonInstallQueue<InstallableSearchResult>(serverId, worldId)
 		if (queuedPlans.size === 0) return true
 
+		try {
+			await waitForServerContextRuntimeReady(client, serverId)
+		} catch (error) {
+			handleError(error as Error)
+			return false
+		}
+
 		isInstallingQueuedServerInstalls.value = true
 		queuedInstallProgress.value = {
 			completed: 0,
@@ -499,9 +392,6 @@ export function createServerInstallContent(opts: {
 			})
 
 			if (!result.ok) {
-				for (const plan of result.attemptedPlans) {
-					removePendingServerContentInstall(serverId, worldId, plan.projectId)
-				}
 				handleError(result.error as Error)
 				return false
 			}
@@ -514,10 +404,6 @@ export function createServerInstallContent(opts: {
 				...serverContentProjectIds.value,
 				...result.flushedPlans.map((plan) => plan.projectId),
 			])
-			serverContentInstallKeys.value = new Set([
-				...serverContentInstallKeys.value,
-				...result.flushedPlans.map((plan) => plan.projectId),
-			])
 			if (result.flushedPlans.length > 0) {
 				await queryClient.invalidateQueries({ queryKey: ['content', 'list', 'v1', serverId] })
 			}
@@ -542,20 +428,6 @@ export function createServerInstallContent(opts: {
 
 		if (sid && wid) {
 			writeStoredServerInstallQueue(sid, wid, plans)
-			writePendingServerContentInstallBaseline(sid, wid, serverContentInstallKeys.value)
-			addPendingServerContentInstalls(sid, wid, getQueuedInstallPlaceholderFallbacks(plans))
-			void getQueuedInstallPlaceholders(client, plans)
-				.then((items) => {
-					const pendingProjectIds = new Set(
-						readPendingServerContentInstalls(sid, wid).map((item) => item.projectId),
-					)
-					addPendingServerContentInstalls(
-						sid,
-						wid,
-						items.filter((item) => pendingProjectIds.has(item.projectId)),
-					)
-				})
-				.catch((err) => handleError(err as Error))
 		}
 		await router.push(backUrl)
 		void flushQueuedServerInstalls(sid, wid)
diff --git a/apps/frontend/src/composables/use-server-install-content.ts b/apps/frontend/src/composables/use-server-install-content.ts
index 53ab528596..956a621e7e 100644
--- a/apps/frontend/src/composables/use-server-install-content.ts
+++ b/apps/frontend/src/composables/use-server-install-content.ts
@@ -6,11 +6,8 @@ import type {
 	CreationFlowContextValue,
 	EnvironmentSearchOverride,
 	FilterValue,
-	PendingServerContentInstall,
-	PendingServerContentInstallType,
 } from '@modrinth/ui'
 import {
-	addPendingServerContentInstalls,
 	commonMessages,
 	defineMessages,
 	flushStoredServerAddonInstallQueue,
@@ -18,14 +15,14 @@ import {
 	getTargetInstallPreferences,
 	injectModrinthClient,
 	injectNotificationManager,
-	readPendingServerContentInstalls,
 	readStoredServerInstallQueue,
-	removePendingServerContentInstall,
 	requestInstall,
 	stripServerRuntimeInstallFilters,
 	stripServerRuntimeInstallOverrides,
+	useServerContextRuntime,
+	useServerPanelSync,
 	useVIntl,
-	writePendingServerContentInstallBaseline,
+	waitForServerContextRuntimeReady,
 	writeStoredServerInstallQueue,
 } from '@modrinth/ui'
 import { useQuery, useQueryClient } from '@tanstack/vue-query'
@@ -35,7 +32,6 @@ import { computed, nextTick, ref, watch } from 'vue'
 import { navigateTo, useRoute } from '#app'
 import { queryAsString } from '~/utils/router'
 
-type PendingServerContentInstallInput = Omit<PendingServerContentInstall, 'createdAt'>
 type ServerInstallBrowseSearchState = Pick<
 	BrowseSearchState,
 	'currentFilters' | 'overriddenProvidedFilterTypes'
@@ -88,34 +84,6 @@ const messages = defineMessages({
 	},
 })
 
-function getQueuedInstallOwnerFallback(project: ServerInstallSearchResult) {
-	if (project.organization) {
-		const ownerId = project.organization_id ?? project.organization
-		return {
-			id: ownerId,
-			name: project.organization,
-			type: 'organization' as const,
-			link: `/organization/${ownerId}`,
-		}
-	}
-
-	if (!project.author) return null
-
-	const ownerId = project.author_id ?? project.author
-	return {
-		id: ownerId,
-		name: project.author,
-		type: 'user' as const,
-		link: `/user/${ownerId}`,
-	}
-}
-
-function getQueuedAddonInstallPlans(
-	plans: Map<string, BrowseInstallPlan<ServerInstallSearchResult>>,
-) {
-	return Array.from(plans.values()).filter((plan) => plan.contentType !== 'modpack')
-}
-
 export function useServerInstallContent({
 	projectType,
 	onboardingModalRef,
@@ -136,6 +104,11 @@ export function useServerInstallContent({
 	const currentServerId = computed(() => queryAsString(route.query.sid) || null)
 	const fromContext = computed(() => queryAsString(route.query.from) || null)
 	const currentWorldId = computed(() => queryAsString(route.query.wid) || null)
+	useServerContextRuntime(currentServerId)
+	useServerPanelSync({
+		serverId: currentServerId,
+		worldId: currentWorldId,
+	})
 
 	const {
 		data: serverData,
@@ -219,81 +192,6 @@ export function useServerInstallContent({
 		writeStoredServerInstallQueue(serverId, worldId, plans)
 	}
 
-	async function getQueuedInstallOwner(project: ServerInstallSearchResult) {
-		const fallback = getQueuedInstallOwnerFallback(project)
-
-		try {
-			if (project.organization) {
-				const organization = await client.labrinth.projects_v3.getOrganization(project.project_id)
-				if (organization) {
-					return {
-						id: organization.id,
-						name: organization.name,
-						type: 'organization' as const,
-						avatar_url: organization.icon_url ?? undefined,
-						link: `/organization/${organization.slug}`,
-					}
-				}
-			}
-
-			const members = await client.labrinth.projects_v3.getMembers(project.project_id)
-			const owner =
-				members.find((member) => member.user.id === project.author_id)?.user ??
-				members.find((member) => member.is_owner || member.role === 'Owner')?.user ??
-				members[0]?.user
-
-			if (owner) {
-				return {
-					id: owner.id,
-					name: owner.username,
-					type: 'user' as const,
-					avatar_url: owner.avatar_url,
-					link: `/user/${owner.username}`,
-				}
-			}
-		} catch {
-			return fallback
-		}
-
-		return fallback
-	}
-
-	function getQueuedInstallPlaceholder(
-		plan: BrowseInstallPlan<ServerInstallSearchResult>,
-		owner: PendingServerContentInstallInput['owner'],
-	): PendingServerContentInstallInput {
-		return {
-			projectId: plan.projectId,
-			versionId: plan.versionId,
-			contentType: plan.contentType as PendingServerContentInstallType,
-			title: getInstallProjectName(plan.project),
-			versionName: plan.versionName ?? null,
-			versionNumber: plan.versionNumber ?? null,
-			fileName: plan.fileName ?? null,
-			owner,
-			slug: plan.project.slug ?? plan.projectId,
-			iconUrl: plan.project.icon_url ?? null,
-		}
-	}
-
-	function getQueuedInstallPlaceholderFallbacks(
-		plans: Map<string, BrowseInstallPlan<ServerInstallSearchResult>>,
-	) {
-		return getQueuedAddonInstallPlans(plans).map((plan) =>
-			getQueuedInstallPlaceholder(plan, getQueuedInstallOwnerFallback(plan.project)),
-		)
-	}
-
-	async function getQueuedInstallPlaceholders(
-		plans: Map<string, BrowseInstallPlan<ServerInstallSearchResult>>,
-	) {
-		return Promise.all(
-			getQueuedAddonInstallPlans(plans).map(async (plan) =>
-				getQueuedInstallPlaceholder(plan, await getQueuedInstallOwner(plan.project)),
-			),
-		)
-	}
-
 	function setProjectInstalling(projectId: string, installing: boolean) {
 		const next = new Set(installingProjectIds.value)
 		if (installing) {
@@ -319,10 +217,6 @@ export function useServerInstallContent({
 		)
 	}
 
-	function getServerInstalledContentKeys(data = serverContentData.value) {
-		return new Set((data?.addons ?? []).map((addon) => addon.project_id ?? addon.filename))
-	}
-
 	function syncHiddenInstalledProjectIds() {
 		hiddenInstalledProjectIds.value = new Set([
 			...getServerInstalledProjectIds(),
@@ -428,43 +322,6 @@ export function useServerInstallContent({
 		)
 	}
 
-	function toResolvePreferences(
-		preferences?: BrowseInstallPlan<ServerInstallSearchResult>['preferences'],
-	): Labrinth.Content.v3.ResolutionPreferences {
-		return {
-			game_versions: preferences?.gameVersions,
-			loaders: preferences?.loaders,
-		}
-	}
-
-	async function resolveQueuedAddonPlans(plans: BrowseInstallPlan<ServerInstallSearchResult>[]) {
-		const existingProjectIds = getServerInstalledProjectIds()
-		const resolvedAddons: Array<{ project_id: string; version_id: string }> = []
-
-		for (const plan of plans) {
-			const resolved = await client.labrinth.content_v3.resolve({
-				project_id: plan.projectId,
-				version_id: plan.versionId,
-				content_type: plan.contentType as Labrinth.Content.v3.ContentType,
-				selected: toResolvePreferences(plan.preferences),
-				target: toResolvePreferences(getServerInstallTargetPreferences(plan.contentType)),
-				existing_project_ids: Array.from(existingProjectIds),
-			})
-			const content = [resolved.primary, ...resolved.dependencies]
-
-			for (const item of content) {
-				if (existingProjectIds.has(item.project_id)) continue
-				existingProjectIds.add(item.project_id)
-				resolvedAddons.push({
-					project_id: item.project_id,
-					version_id: item.version_id,
-				})
-			}
-		}
-
-		return resolvedAddons
-	}
-
 	function getInstallProjectVersions(projectId: string) {
 		return client.labrinth.versions_v2.getProjectVersions(projectId, {
 			include_changelog: false,
@@ -498,6 +355,13 @@ export function useServerInstallContent({
 		)
 		if (queuedPlans.size === 0) return true
 
+		try {
+			await waitForServerContextRuntimeReady(client, serverId)
+		} catch (error) {
+			handleError(error as Error)
+			return false
+		}
+
 		isInstallingQueuedServerInstalls.value = true
 		queuedInstallProgress.value = {
 			completed: 0,
@@ -509,18 +373,19 @@ export function useServerInstallContent({
 				serverId,
 				worldId,
 				install: async (plans) => {
-					const addons = await resolveQueuedAddonPlans(plans)
-					if (addons.length > 0) {
-						await client.archon.content_v1.addAddons(serverId, worldId, addons)
-					}
+					await client.archon.content_v1.addAddons(
+						serverId,
+						worldId,
+						plans.map((plan) => ({
+							project_id: plan.projectId,
+							version_id: plan.versionId,
+						})),
+					)
 				},
 				onQueueChange: (plans) => setStoredServerInstallPlans(serverId, worldId, plans),
 			})
 
 			if (!result.ok) {
-				for (const plan of result.attemptedPlans) {
-					removePendingServerContentInstall(serverId, worldId, plan.projectId)
-				}
 				handleError(result.error as Error)
 				return false
 			}
@@ -533,10 +398,7 @@ export function useServerInstallContent({
 				total: result.flushedPlans.length,
 			}
 			if (result.flushedPlans.length > 0) {
-				await Promise.all([
-					queryClient.invalidateQueries({ queryKey: ['content', 'list', 'v1', serverId] }),
-					queryClient.invalidateQueries({ queryKey: ['content', 'list'] }),
-				])
+				await queryClient.invalidateQueries({ queryKey: ['content', 'list'] })
 			}
 
 			return true
@@ -559,23 +421,6 @@ export function useServerInstallContent({
 
 		if (sid && wid) {
 			writeStoredServerInstallQueue(sid, wid, plans)
-			writePendingServerContentInstallBaseline(sid, wid, [
-				...getServerInstalledContentKeys(),
-				...optimisticallyInstalledProjectIds.value,
-			])
-			addPendingServerContentInstalls(sid, wid, getQueuedInstallPlaceholderFallbacks(plans))
-			void getQueuedInstallPlaceholders(plans)
-				.then((items) => {
-					const pendingProjectIds = new Set(
-						readPendingServerContentInstalls(sid, wid).map((item) => item.projectId),
-					)
-					addPendingServerContentInstalls(
-						sid,
-						wid,
-						items.filter((item) => pendingProjectIds.has(item.projectId)),
-					)
-				})
-				.catch((err) => handleError(err as Error))
 		}
 		await navigateTo(backUrl)
 		void flushQueuedServerInstalls(sid, wid)
diff --git a/packages/api-client/src/core/abstract-websocket.ts b/packages/api-client/src/core/abstract-websocket.ts
index 8d3e54ee29..784bf50a40 100644
--- a/packages/api-client/src/core/abstract-websocket.ts
+++ b/packages/api-client/src/core/abstract-websocket.ts
@@ -9,6 +9,7 @@ export type WebSocketEventHandler<
 export interface WebSocketConnection {
 	serverId: string
 	socket: WebSocket
+	authenticated: boolean
 	reconnectAttempts: number
 	reconnectTimer?: ReturnType<typeof setTimeout>
 	isReconnecting: boolean
@@ -31,6 +32,7 @@ export abstract class AbstractWebSocketClient {
 	protected readonly MAX_RECONNECT_ATTEMPTS = 10
 	protected readonly RECONNECT_BASE_DELAY = 1000
 	protected readonly RECONNECT_MAX_DELAY = 30000
+	protected readonly AUTHENTICATION_TIMEOUT = 30000
 
 	constructor(
 		protected client: {
@@ -58,6 +60,7 @@ export abstract class AbstractWebSocketClient {
 		}
 
 		if (status && !status.connected && !options?.force) {
+			await this.waitForAuthentication(serverId)
 			return
 		}
 
@@ -69,6 +72,28 @@ export abstract class AbstractWebSocketClient {
 		await this.connect(serverId, auth)
 	}
 
+	protected async waitForAuthentication(serverId: string): Promise<void> {
+		await new Promise<void>((resolve, reject) => {
+			let unsubscribe = () => {}
+			const timeout = setTimeout(() => {
+				unsubscribe()
+				reject(new Error(`WebSocket authentication timed out for server ${serverId}`))
+			}, this.AUTHENTICATION_TIMEOUT)
+
+			unsubscribe = this.on(serverId, 'auth-ok', () => {
+				clearTimeout(timeout)
+				unsubscribe()
+				resolve()
+			})
+
+			if (this.getStatus(serverId)?.connected) {
+				clearTimeout(timeout)
+				unsubscribe()
+				resolve()
+			}
+		})
+	}
+
 	on<E extends Archon.Websocket.v0.WSEventType>(
 		serverId: string,
 		eventType: E,
@@ -88,7 +113,7 @@ export abstract class AbstractWebSocketClient {
 		if (!connection) return null
 
 		return {
-			connected: connection.socket.readyState === WebSocket.OPEN,
+			connected: connection.socket.readyState === WebSocket.OPEN && connection.authenticated,
 			reconnecting: connection.isReconnecting,
 			reconnectAttempts: connection.reconnectAttempts,
 		}
diff --git a/packages/api-client/src/modules/archon/types.ts b/packages/api-client/src/modules/archon/types.ts
index 7add0d5a84..56df291622 100644
--- a/packages/api-client/src/modules/archon/types.ts
+++ b/packages/api-client/src/modules/archon/types.ts
@@ -301,13 +301,24 @@ export namespace Archon {
 				environment?: Labrinth.Projects.v3.Environment | null
 			}
 
+			export type AddonStatus =
+				| 'pending'
+				| 'installed'
+				| {
+						failed: {
+							error: string
+						}
+				  }
+
 			export type Addon = {
 				id: string
 				filename: string
 				filesize: number
+				btime?: string
 				disabled: boolean
 				kind: AddonKind
 				from_modpack: boolean
+				status: AddonStatus
 				pack_client_retained: boolean
 				pack_client_depends: boolean
 				has_update: string | null
@@ -323,6 +334,10 @@ export namespace Archon {
 				modloader_version: string | null
 				game_version: string | null
 				modpack: ModpackFields | null
+				installing?: 'loader' | 'modpack'
+				error?: {
+					message: string
+				}
 				addons: Addon[] | null
 			}
 
@@ -989,6 +1004,78 @@ export namespace Archon {
 				world_id: string
 				spec: Archon.Content.v1.Addons
 			}
+			export type WorldContentPlatform =
+				| 'forge'
+				| 'neoforge'
+				| 'fabric'
+				| 'quilt'
+				| 'paper'
+				| 'purpur'
+				| 'vanilla'
+			export type WorldContentPlatformData = {
+				platform: WorldContentPlatform
+				game_version: string
+				platform_version: string | null
+			}
+			export type WorldContentModpackSource =
+				| 'CurseForge'
+				| {
+						Modrinth: {
+							version_id: string
+							project_id: string
+							mrpack_sha1: string | null
+						}
+				  }
+				| {
+						LocalMrPackFile: {
+							path: string
+							name: string
+							description: string | null
+							version_name: string | null
+						}
+				  }
+			export type WorldContentModpack = {
+				spec: WorldContentModpackSource
+				downloads: number | null
+				followers: number | null
+				icon_url: string | null
+				owner: Archon.Content.v1.ContentOwner | null
+				title: string | null
+				description: string | null
+				version_number: string | null
+				date_published: string | null
+				environment: Labrinth.Projects.v3.Environment | null
+				has_update: string | null
+			}
+			export type WorldContentItem = {
+				parent_directory: string
+				file_sha1: string | null
+				filename: string
+				btime?: string
+				from_modpack: boolean
+				version_id: string | null
+				project_id: string | null
+				pack_client_retained: boolean
+				pack_client_depends: boolean
+				status: Archon.Content.v1.AddonStatus
+				filesize: number | null
+				name: string | null
+				version: Archon.Content.v1.AddonVersion | null
+				owner: Archon.Content.v1.ContentOwner | null
+				has_update: string | null
+				icon_url: string | null
+			}
+			export type WorldContentUpdateEvent = {
+				type: 'world.content.update'
+				world_id: string
+				platform_data: WorldContentPlatformData | null
+				linked_modpack: WorldContentModpack | null
+				installing?: 'loader' | 'modpack'
+				error?: {
+					message: string
+				}
+				content: WorldContentItem[]
+			}
 
 			export type SyncEvent =
 				| ProtocolResetEvent
@@ -1007,6 +1094,7 @@ export namespace Archon {
 				| WorldStartupPatchEvent
 				| WorldContentAddonPatchEvent
 				| WorldContentBaseUpdateEvent
+				| WorldContentUpdateEvent
 		}
 	}
 
@@ -1111,6 +1199,53 @@ export namespace Archon {
 				version_id: string
 			}
 
+			export type InstallProgressFileKey = {
+				type: 'file'
+				install_type: 'install' | 'update'
+				project_id: string
+				version_id: string
+				parent_directory: string
+				source_filename: string | null
+				target_filename?: string | null
+			}
+
+			export type InstallProgressModrinthModpackKey = {
+				type: 'modrinth_modpack'
+				project_id: string
+				version_id: string
+			}
+
+			export type InstallProgressLocalModpackKey = {
+				type: 'local_modpack'
+				filename: string
+			}
+
+			export type InstallProgressPlatformKey = {
+				type: 'platform'
+				platform: 'forge' | 'neoforge' | 'fabric' | 'quilt' | 'paper' | 'purpur' | 'vanilla'
+				platform_version: string
+				game_version: string
+			}
+
+			export type InstallProgressKey =
+				| InstallProgressFileKey
+				| InstallProgressModrinthModpackKey
+				| InstallProgressLocalModpackKey
+				| InstallProgressPlatformKey
+
+			export type InstallProgressItem = {
+				world_id: string
+				key: InstallProgressKey
+				id: string
+				progress: number | null
+				error: string | null
+			}
+
+			export type WSInstallProgressEvent = {
+				event: 'install-progress'
+				items: InstallProgressItem[]
+			}
+
 			export type FilesystemOpKind = 'unarchive'
 
 			export type FilesystemOpState =
@@ -1208,6 +1343,7 @@ export namespace Archon {
 				| WSInstallationResultEvent
 				| WSUptimeEvent
 				| WSNewModEvent
+				| WSInstallProgressEvent
 				| WSFilesystemOpsEvent
 
 			export type WSEventType = WSEvent['event']
diff --git a/packages/api-client/src/platform/websocket-generic.ts b/packages/api-client/src/platform/websocket-generic.ts
index 19aa098f45..e66bc05095 100644
--- a/packages/api-client/src/platform/websocket-generic.ts
+++ b/packages/api-client/src/platform/websocket-generic.ts
@@ -19,12 +19,14 @@ export class GenericWebSocketClient extends AbstractWebSocketClient {
 		}
 
 		return new Promise((resolve, reject) => {
+			let settled = false
 			try {
 				const ws = new WebSocket(getNodeWebSocketUrl(auth.url))
 
 				const connection: WebSocketConnection = {
 					serverId,
 					socket: ws,
+					authenticated: false,
 					reconnectAttempts: 0,
 					reconnectTimer: undefined,
 					isReconnecting: false,
@@ -37,18 +39,26 @@ export class GenericWebSocketClient extends AbstractWebSocketClient {
 
 					connection.reconnectAttempts = 0
 					connection.isReconnecting = false
-
-					resolve()
 				}
 
 				ws.onmessage = (messageEvent) => {
 					try {
 						const data = JSON.parse(messageEvent.data) as Archon.Websocket.v0.WSEvent
+						if (data.event === 'auth-ok') {
+							connection.authenticated = true
+						} else if (data.event === 'auth-incorrect') {
+							connection.authenticated = false
+						}
 
 						const eventKey = `${serverId}:${data.event}` as keyof WSEventMap
 						// eslint-disable-next-line @typescript-eslint/no-explicit-any
 						this.emitter.emit(eventKey, data as any)
 
+						if (data.event === 'auth-ok' && !settled) {
+							settled = true
+							resolve()
+						}
+
 						if (data.event === 'auth-expiring' || data.event === 'auth-incorrect') {
 							this.handleAuthExpiring(serverId).catch(console.error)
 						}
@@ -58,11 +68,20 @@ export class GenericWebSocketClient extends AbstractWebSocketClient {
 				}
 
 				ws.onclose = (event) => {
+					connection.authenticated = false
 					console.debug(`[WebSocket] Closed for server ${serverId}:`, {
 						code: event.code,
 						reason: event.reason,
 						wasClean: event.wasClean,
 					})
+					if (!settled) {
+						settled = true
+						reject(
+							new Error(
+								`WebSocket closed before authentication for server ${serverId} (code: ${event.code})`,
+							),
+						)
+					}
 					if (event.code !== NORMAL_CLOSURE) {
 						this.scheduleReconnect(serverId, auth)
 					}
@@ -77,13 +96,17 @@ export class GenericWebSocketClient extends AbstractWebSocketClient {
 						readyStateLabel: ['CONNECTING', 'OPEN', 'CLOSING', 'CLOSED'][readyState],
 						type: (event as Event).type,
 					})
-					reject(
-						new Error(
-							`WebSocket connection failed for server ${serverId} (readyState: ${readyState})`,
-						),
-					)
+					if (!settled) {
+						settled = true
+						reject(
+							new Error(
+								`WebSocket connection failed for server ${serverId} (readyState: ${readyState})`,
+							),
+						)
+					}
 				}
 			} catch (error) {
+				settled = true
 				reject(error)
 			}
 		})
diff --git a/packages/ui/src/components/servers/InstallingBanner.vue b/packages/ui/src/components/servers/InstallingBanner.vue
index 60eb456b61..b857f63d16 100644
--- a/packages/ui/src/components/servers/InstallingBanner.vue
+++ b/packages/ui/src/components/servers/InstallingBanner.vue
@@ -1,7 +1,8 @@
 <template>
 	<Admonition
-		:type="contentError ? 'critical' : 'info'"
-		:dismissible="dismissible"
+		v-if="installation"
+		:type="installation.status === 'failed' ? 'critical' : 'info'"
+		:dismissible="installation.status === 'failed'"
 		:progress="progressValue"
 		progress-color="blue"
 		:waiting="isWaiting"
@@ -10,23 +11,8 @@
 		<template #header>
 			{{ headerLabel }}
 		</template>
-		<template v-if="contentError">
-			{{ errorLabel }}
-		</template>
-		<template v-else-if="effectivePhase">{{ phaseLabel }}</template>
-		<div v-else class="ticker-container">
-			<div class="ticker-content">
-				<div
-					v-for="(message, index) in tickerMessages"
-					:key="message"
-					class="ticker-item"
-					:class="{ active: index === currentIndex % tickerMessages.length }"
-				>
-					{{ message }}
-				</div>
-			</div>
-		</div>
-		<template v-if="contentError" #top-right-actions>
+		{{ installation.status === 'failed' ? errorLabel : descriptionLabel }}
+		<template v-if="installation.status === 'failed'" #top-right-actions>
 			<Button
 				v-tooltip="retryDisabled ? retryDisabledTooltip : undefined"
 				type="outlined"
@@ -44,29 +30,17 @@
 
 <script setup lang="ts">
 import { RotateCounterClockwiseIcon } from '@modrinth/assets'
-import { computed, onMounted, onUnmounted, ref } from 'vue'
+import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
 
 import { Button } from '#ui/components/base/buttons'
 import { defineMessages, useVIntl } from '#ui/composables/i18n'
+import { injectModrinthServerContext } from '#ui/providers'
 import { commonMessages } from '#ui/utils/common-messages'
+import { formatLoaderLabel } from '#ui/utils/loaders'
 
 import Admonition from '../base/Admonition.vue'
 
-export interface SyncProgress {
-	phase: 'Analyzing' | 'InstallingPack' | 'InstallingLoader' | 'Addons'
-	percent: number
-}
-
-export interface ContentError {
-	step: string
-	description: string
-}
-
-const props = defineProps<{
-	progress?: SyncProgress | null
-	fallbackPhase?: SyncProgress['phase'] | null
-	contentError?: ContentError | null
-	dismissible?: boolean
+defineProps<{
 	retryDisabled?: boolean
 	retryDisabledTooltip?: string
 }>()
@@ -77,191 +51,182 @@ const emit = defineEmits<{
 }>()
 
 const { formatMessage } = useVIntl()
+const { installation } = injectModrinthServerContext()
 
 const messages = defineMessages({
 	errorHeader: {
 		id: 'servers.installing-banner.error.header',
 		defaultMessage: 'Installation failed',
 	},
-	preparingHeader: {
-		id: 'servers.installing-banner.preparing.header',
-		defaultMessage: "We're preparing your server",
-	},
-	invalidLoaderVersionError: {
-		id: 'servers.installing-banner.error.invalid-loader-version',
-		defaultMessage:
-			'The specified loader or Minecraft version could not be installed. It may be invalid or unsupported.',
+	platformErrorHeader: {
+		id: 'servers.installing-banner.error.header.platform',
+		defaultMessage: 'Failed to install {loader} {loaderVersion} for Minecraft {gameVersion}',
 	},
-	unsupportedLoaderVersionError: {
-		id: 'servers.installing-banner.error.unsupported-loader-version',
-		defaultMessage: 'This version of Minecraft or loader is not yet supported by Modrinth Hosting.',
+	platformWithoutVersionErrorHeader: {
+		id: 'servers.installing-banner.error.header.platform-without-version',
+		defaultMessage: 'Failed to install {loader} for Minecraft {gameVersion}',
 	},
-	internalPlatformError: {
-		id: 'servers.installing-banner.error.internal-platform',
-		defaultMessage: 'An internal error occurred while installing the platform. Please try again.',
+	minecraftErrorHeader: {
+		id: 'servers.installing-banner.error.header.minecraft',
+		defaultMessage: 'Failed to install Minecraft {version}',
 	},
-	noPrimaryFileError: {
-		id: 'servers.installing-banner.error.no-primary-file',
-		defaultMessage:
-			'This modpack version does not include a downloadable file. It may have been packaged incorrectly.',
+	modpackErrorHeader: {
+		id: 'servers.installing-banner.error.header.modpack',
+		defaultMessage: 'Failed to install modpack',
 	},
-	modpackInstallFailedError: {
-		id: 'servers.installing-banner.error.modpack-install-failed',
-		defaultMessage: 'The modpack could not be installed. It may be corrupted or incompatible.',
+	localModpackErrorHeader: {
+		id: 'servers.installing-banner.error.header.local-modpack',
+		defaultMessage: 'Failed to install {filename}',
 	},
 	unknownError: {
 		id: 'servers.installing-banner.error.unknown',
 		defaultMessage: 'An unexpected error occurred during installation.',
 	},
+	preparingHeader: {
+		id: 'servers.installing-banner.preparing.header',
+		defaultMessage: 'Preparing your server',
+	},
 	installingPlatform: {
-		id: 'servers.installing-banner.phase.installing-platform',
-		defaultMessage: 'Installing platform...',
+		id: 'servers.installing-banner.installing-platform',
+		defaultMessage: 'Installing {loader} for Minecraft {version}',
+	},
+	installingMinecraft: {
+		id: 'servers.installing-banner.installing-minecraft',
+		defaultMessage: 'Installing Minecraft {version}',
 	},
 	installingModpack: {
-		id: 'servers.installing-banner.phase.installing-modpack',
-		defaultMessage: 'Installing modpack...',
+		id: 'servers.installing-banner.installing-modpack',
+		defaultMessage: 'Installing modpack',
 	},
-	installingAddons: {
-		id: 'servers.installing-banner.phase.installing-addons',
-		defaultMessage: 'Installing addons...',
+	installingLocalModpack: {
+		id: 'servers.installing-banner.installing-local-modpack',
+		defaultMessage: 'Installing {filename}',
 	},
-	tickerOrganizingFiles: {
-		id: 'servers.installing-banner.ticker.organizing-files',
-		defaultMessage: 'Organizing files...',
+	preparingDescription: {
+		id: 'servers.installing-banner.description.preparing',
+		defaultMessage: 'Preparing your server...',
 	},
-	tickerDownloadingMods: {
-		id: 'servers.installing-banner.ticker.downloading-mods',
-		defaultMessage: 'Downloading mods...',
+	applyingDescription: {
+		id: 'servers.installing-banner.description.applying',
+		defaultMessage: 'Applying your installation changes...',
 	},
-	tickerConfiguringServer: {
-		id: 'servers.installing-banner.ticker.configuring-server',
-		defaultMessage: 'Configuring server...',
+	durationDescription: {
+		id: 'servers.installing-banner.description.duration',
+		defaultMessage: 'This installation may take several minutes...',
 	},
-	tickerSettingUpEnvironment: {
-		id: 'servers.installing-banner.ticker.setting-up-environment',
-		defaultMessage: 'Setting up environment...',
+	controlsDescription: {
+		id: 'servers.installing-banner.description.controls',
+		defaultMessage: 'Server controls will unlock when installation finishes.',
 	},
-	tickerAddingJava: {
-		id: 'servers.installing-banner.ticker.adding-java',
-		defaultMessage: 'Adding Java...',
+	stillWorkingDescription: {
+		id: 'servers.installing-banner.description.still-working',
+		defaultMessage: 'Still working—your installation is in progress...',
 	},
 })
 
-const errorLabel = computed(() => {
-	const desc = props.contentError?.description?.toLowerCase()
-	const step = props.contentError?.step
-
-	if (step === 'modloader') {
-		if (desc === 'the specified version may be incorrect') {
-			return formatMessage(messages.invalidLoaderVersionError)
-		}
-		if (desc === 'this version is not yet supported') {
-			return formatMessage(messages.unsupportedLoaderVersionError)
-		}
-		if (desc === 'internal error') {
-			return formatMessage(messages.internalPlatformError)
-		}
-	}
-
-	if (step === 'modpack') {
-		if (desc?.includes('no primary file')) {
-			return formatMessage(messages.noPrimaryFileError)
-		}
-		if (desc?.includes('failed to install')) {
-			return formatMessage(messages.modpackInstallFailedError)
+const headerLabel = computed(() => {
+	const current = installation.value
+	if (!current) return ''
+
+	switch (current.key.type) {
+		case 'platform': {
+			if (current.key.platform === 'vanilla') {
+				if (current.status === 'failed') {
+					return formatMessage(messages.minecraftErrorHeader, {
+						version: current.key.game_version,
+					})
+				}
+				return formatMessage(messages.installingMinecraft, {
+					version: current.key.game_version,
+				})
+			}
+			if (current.status === 'failed') {
+				if (!current.key.platform_version) {
+					return formatMessage(messages.platformWithoutVersionErrorHeader, {
+						loader: formatLoaderLabel(current.key.platform),
+						gameVersion: current.key.game_version,
+					})
+				}
+				return formatMessage(messages.platformErrorHeader, {
+					loader: formatLoaderLabel(current.key.platform),
+					loaderVersion: current.key.platform_version,
+					gameVersion: current.key.game_version,
+				})
+			}
+			return formatMessage(messages.installingPlatform, {
+				loader: formatLoaderLabel(current.key.platform),
+				version: current.key.game_version,
+			})
 		}
+		case 'modrinth_modpack':
+			return formatMessage(
+				current.status === 'failed' ? messages.modpackErrorHeader : messages.installingModpack,
+			)
+		case 'local_modpack':
+			return formatMessage(
+				current.status === 'failed'
+					? messages.localModpackErrorHeader
+					: messages.installingLocalModpack,
+				{
+					filename: current.key.filename,
+				},
+			)
+		case 'unknown':
+			return formatMessage(
+				current.status === 'failed' ? messages.errorHeader : messages.preparingHeader,
+			)
 	}
 
-	return props.contentError?.description ?? formatMessage(messages.unknownError)
+	return formatMessage(messages.preparingHeader)
 })
 
-const effectivePhase = computed(() => props.progress?.phase ?? props.fallbackPhase ?? null)
+const descriptionIndex = ref(0)
+const installationId = computed(() => installation.value?.id ?? null)
 
-const headerLabel = computed(() => {
-	if (props.contentError) return formatMessage(messages.errorHeader)
-	if (effectivePhase.value === 'Addons') return formatMessage(commonMessages.installingContentLabel)
-	return formatMessage(messages.preparingHeader)
+watch(installationId, () => {
+	descriptionIndex.value = 0
 })
 
-const phaseLabel = computed(() => {
-	switch (effectivePhase.value) {
-		case 'InstallingLoader':
-			return formatMessage(messages.installingPlatform)
-		case 'InstallingPack':
-			return formatMessage(messages.installingModpack)
-		case 'Addons':
-			return formatMessage(messages.installingAddons)
+const descriptionLabel = computed(() => {
+	switch (descriptionIndex.value) {
+		case 0:
+			return formatMessage(messages.preparingDescription)
+		case 1:
+			return formatMessage(messages.applyingDescription)
+		case 2:
+			return formatMessage(messages.durationDescription)
 		default:
-			return formatMessage(commonMessages.installingLabel)
+			return descriptionIndex.value % 2 === 1
+				? formatMessage(messages.controlsDescription)
+				: formatMessage(messages.stillWorkingDescription)
 	}
 })
 
+const errorLabel = computed(() => installation.value?.error ?? formatMessage(messages.unknownError))
+
 const progressValue = computed(() => {
-	if (props.contentError) return undefined
-	return props.progress ? props.progress.percent / 100 : 0
+	const current = installation.value
+	if (!current || current.status === 'failed') return undefined
+	return current.progress == null ? 0 : current.progress / 100
 })
 
 const isWaiting = computed(() => {
-	if (props.contentError) return false
-	return !props.progress || props.progress.percent <= 0
+	const current = installation.value
+	if (!current || current.status === 'failed') return false
+	return current.progress == null || current.progress <= 0
 })
 
-const tickerMessages = computed(() => [
-	formatMessage(messages.tickerOrganizingFiles),
-	formatMessage(messages.tickerDownloadingMods),
-	formatMessage(messages.tickerConfiguringServer),
-	formatMessage(messages.tickerSettingUpEnvironment),
-	formatMessage(messages.tickerAddingJava),
-])
-
-const currentIndex = ref(0)
-
 let intervalId: ReturnType<typeof setInterval> | null = null
 
 onMounted(() => {
 	intervalId = setInterval(() => {
-		currentIndex.value = (currentIndex.value + 1) % tickerMessages.value.length
-	}, 3000)
+		if (installation.value?.status === 'pending' || installation.value?.status === 'installing') {
+			descriptionIndex.value += 1
+		}
+	}, 15_000)
 })
 
 onUnmounted(() => {
-	if (intervalId) {
-		clearInterval(intervalId)
-	}
+	if (intervalId) clearInterval(intervalId)
 })
 </script>
-
-<style scoped>
-.ticker-container {
-	height: 20px;
-	width: 100%;
-	position: relative;
-}
-
-.ticker-content {
-	position: relative;
-	width: 100%;
-}
-
-.ticker-item {
-	position: absolute;
-	top: 0;
-	left: 0;
-	width: 100%;
-	height: 20px;
-	display: flex;
-	align-items: center;
-	white-space: nowrap;
-	color: var(--color-secondary-text);
-	opacity: 0;
-	transform: scale(0.9);
-	filter: blur(4px);
-	transition: all 0.3s ease-in-out;
-}
-
-.ticker-item.active {
-	opacity: 1;
-	transform: scale(1);
-	filter: blur(0);
-}
-</style>
diff --git a/packages/ui/src/components/servers/ServerSetupModal.vue b/packages/ui/src/components/servers/ServerSetupModal.vue
index bdaba6afa2..528020ca19 100644
--- a/packages/ui/src/components/servers/ServerSetupModal.vue
+++ b/packages/ui/src/components/servers/ServerSetupModal.vue
@@ -131,6 +131,11 @@ async function onFlowComplete(ctx: CreationFlowContextValue) {
 			await handleMrpackUpload(ctx.modpackFile.value, ctx.buildProperties())
 		} else if (ctx.setupType.value === 'modpack' && ctx.modpackSelection.value) {
 			debug('onFlowComplete: modpack selection path, calling installContent')
+			serverContext.beginInstallation({
+				type: 'modrinth_modpack',
+				project_id: ctx.modpackSelection.value.projectId,
+				version_id: ctx.modpackSelection.value.versionId,
+			})
 			await client.archon.content_v1.installContent(
 				serverContext.serverId,
 				serverContext.worldId.value!,
@@ -159,6 +164,15 @@ async function onFlowComplete(ctx: CreationFlowContextValue) {
 				apiLoader: toApiLoader(loader ?? 'vanilla'),
 			})
 
+			serverContext.beginInstallation({
+				type: 'platform',
+				platform: (loader ?? 'vanilla') as Extract<
+					Archon.Websocket.v0.InstallProgressKey,
+					{ type: 'platform' }
+				>['platform'],
+				platform_version: loaderVersion,
+				game_version: ctx.selectedGameVersion.value ?? '',
+			})
 			await client.archon.content_v1.installContent(
 				serverContext.serverId,
 				serverContext.worldId.value!,
@@ -183,6 +197,7 @@ async function onFlowComplete(ctx: CreationFlowContextValue) {
 		creationFlowRef.value?.hide()
 	} catch (error) {
 		debug('onFlowComplete: ERROR', error)
+		serverContext.cancelOptimisticInstallation()
 		if ((error as ModrinthApiError).statusCode === 429) {
 			addNotification({
 				title: formatMessage(messages.rateLimitTitle),
@@ -210,6 +225,10 @@ async function handleMrpackUpload(file: File, properties: Archon.Content.v1.Prop
 		{ softOverride: false },
 	)
 	await uploadProgressModal.value!.track(handle)
+	serverContext.beginInstallation({
+		type: 'local_modpack',
+		filename: file.name,
+	})
 	emitReinstall()
 }
 
diff --git a/packages/ui/src/components/servers/admonitions/ServerPanelAdmonitions.vue b/packages/ui/src/components/servers/admonitions/ServerPanelAdmonitions.vue
index 87e9a12746..a7938c79a9 100644
--- a/packages/ui/src/components/servers/admonitions/ServerPanelAdmonitions.vue
+++ b/packages/ui/src/components/servers/admonitions/ServerPanelAdmonitions.vue
@@ -1,15 +1,12 @@
 <script setup lang="ts">
-import { computed, reactive, ref, watch } from 'vue'
+import { computed, reactive, ref } from 'vue'
 import { useRoute } from 'vue-router'
 
 import Admonition from '#ui/components/base/Admonition.vue'
 import StackedAdmonitions, {
 	type StackedAdmonitionItem,
 } from '#ui/components/base/StackedAdmonitions.vue'
-import InstallingBanner, {
-	type ContentError,
-	type SyncProgress,
-} from '#ui/components/servers/InstallingBanner.vue'
+import InstallingBanner from '#ui/components/servers/InstallingBanner.vue'
 import { defineMessages, useVIntl } from '#ui/composables/i18n'
 import { useServerBackupsQueue } from '#ui/composables/server-backups-queue'
 import { useServerPermissions } from '#ui/composables/server-permissions'
@@ -20,13 +17,8 @@ import BackupAdmonition, { type BackupAdmonitionEntry } from './BackupAdmonition
 import FileOperationAdmonition from './FileOperationAdmonition.vue'
 import UploadAdmonition from './UploadAdmonition.vue'
 
-const props = defineProps<{
-	syncProgress?: SyncProgress | null
-	contentError?: ContentError | null
-}>()
-
 const emit = defineEmits<{
-	'content-retry': []
+	'installation-retry': []
 }>()
 
 const { formatMessage } = useVIntl()
@@ -58,28 +50,18 @@ const messages = defineMessages({
 const isOnContentTab = computed(() => route.path.includes('/content'))
 const isOnFilesTab = computed(() => route.path.includes('/files'))
 
-const bannerCoversInstalling = computed(
-	() =>
-		ctx.server.value?.status === 'installing' ||
-		ctx.isSyncingContent.value ||
-		ctx.busyReasons.value.some(
-			(r) =>
-				r.reason.id === 'servers.busy.installing' || r.reason.id === 'servers.busy.syncing-content',
-		),
-)
-
 function isBackupReason(id: string) {
 	return id === 'servers.busy.backup-creating' || id === 'servers.busy.backup-restoring'
 }
 
 function isInstallingReason(id: string) {
-	return id === 'servers.busy.installing' || id === 'servers.busy.syncing-content'
+	return id === 'servers.busy.installing'
 }
 
 const filteredBusyReasons = computed(() =>
 	ctx.busyReasons.value.filter((r) => {
 		if (isBackupReason(r.reason.id)) return false
-		if (bannerCoversInstalling.value && isInstallingReason(r.reason.id)) return false
+		if (isInstallingReason(r.reason.id)) return false
 		return true
 	}),
 )
@@ -95,17 +77,6 @@ const filesBusyHeader = computed(() =>
 const dismissedIds = reactive(new Set<string>())
 const cancellingIds = reactive(new Set<string>())
 const uploadCancelling = ref(false)
-const dismissedContentErrorKey = ref<string | null>(null)
-
-const contentErrorKey = computed(() =>
-	props.contentError ? `${props.contentError.step}:${props.contentError.description}` : null,
-)
-
-watch(contentErrorKey, (key) => {
-	if (!key) {
-		dismissedContentErrorKey.value = null
-	}
-})
 
 const backupAdmonitionEntries = computed<BackupAdmonitionEntry[]>(() => {
 	const result: BackupAdmonitionEntry[] = []
@@ -171,12 +142,7 @@ type ServerAdmonitionItem = StackedAdmonitionItem & {
 	)
 
 const showInstallingBanner = computed(() => {
-	if (!ctx.server.value) return false
-	const installing = bannerCoversInstalling.value || !!props.contentError
-	if (!installing) return false
-	if (contentErrorKey.value && dismissedContentErrorKey.value === contentErrorKey.value)
-		return false
-	return props.syncProgress?.phase !== 'Analyzing'
+	return !!ctx.installation.value && ctx.installation.value.status !== 'complete'
 })
 
 function fsOpType(op: FileOperation): StackedAdmonitionItem['type'] {
@@ -210,10 +176,11 @@ const stackItems = computed<ServerAdmonitionItem[]>(() => {
 	let sortIndex = 0
 
 	if (showInstallingBanner.value) {
+		const failed = ctx.installation.value?.status === 'failed'
 		out.push({
 			id: 'installing',
-			type: props.contentError ? 'critical' : 'info',
-			dismissible: !!props.contentError,
+			type: failed ? 'critical' : 'info',
+			dismissible: failed,
 			kind: 'installing',
 			priority: 0,
 			sortIndex: sortIndex++,
@@ -365,8 +332,8 @@ async function onDismissAll() {
 	const tasks: Promise<unknown>[] = []
 	for (const it of stackItems.value) {
 		if (!it.dismissible) continue
-		if (it.kind === 'installing' && props.contentError) {
-			onContentErrorDismiss()
+		if (it.kind === 'installing') {
+			onInstallationDismiss()
 		} else if (it.kind === 'fs-op' && it.op.id) {
 			const { op } = it
 			if (op.state === 'done' || op.state?.startsWith('fail')) {
@@ -385,9 +352,9 @@ function onFileOpDismiss(item: ServerAdmonitionItem) {
 	}
 }
 
-function onContentErrorDismiss() {
-	if (contentErrorKey.value) {
-		dismissedContentErrorKey.value = contentErrorKey.value
+function onInstallationDismiss() {
+	if (ctx.installation.value) {
+		ctx.dismissInstallation(ctx.installation.value.id)
 	}
 }
 </script>
@@ -402,14 +369,10 @@ function onContentErrorDismiss() {
 		<template #item="{ item, dismissible }">
 			<InstallingBanner
 				v-if="item.kind === 'installing'"
-				:progress="syncProgress"
-				:fallback-phase="isOnContentTab && !syncProgress ? 'Addons' : null"
-				:content-error="contentError"
-				:dismissible="dismissible && !!contentError"
 				:retry-disabled="!canSetup"
 				:retry-disabled-tooltip="permissionDeniedMessage"
-				@dismiss="onContentErrorDismiss"
-				@retry="emit('content-retry')"
+				@dismiss="onInstallationDismiss"
+				@retry="emit('installation-retry')"
 			/>
 			<UploadAdmonition
 				v-else-if="item.kind === 'upload'"
diff --git a/packages/ui/src/components/servers/server-header/use-server-power-action.ts b/packages/ui/src/components/servers/server-header/use-server-power-action.ts
index 2c0743ce0f..4978193ddc 100644
--- a/packages/ui/src/components/servers/server-header/use-server-power-action.ts
+++ b/packages/ui/src/components/servers/server-header/use-server-power-action.ts
@@ -13,20 +13,12 @@ export type PowerAction = 'Start' | 'Stop' | 'Restart' | 'Kill'
 export function useServerPowerAction(options?: { disabled?: Ref<boolean> }) {
 	const { formatMessage } = useVIntl()
 	const client = injectModrinthClient()
-	const { serverId, server, powerState, isSyncingContent, busyReasons } =
-		injectModrinthServerContext()
+	const { serverId, powerState, busyReasons } = injectModrinthServerContext()
 	const { addNotification } = injectNotificationManager()
 	const { canUsePowerActions, permissionDeniedMessage } = useServerPermissions()
 
-	const isInstalling = computed(
-		() =>
-			server.value.status === 'installing' ||
-			isSyncingContent.value ||
-			busyReasons.value.some(
-				(r) =>
-					r.reason.id === 'servers.busy.installing' ||
-					r.reason.id === 'servers.busy.syncing-content',
-			),
+	const isInstalling = computed(() =>
+		busyReasons.value.some((reason) => reason.reason.id === 'servers.busy.installing'),
 	)
 	const isRunning = computed(() => powerState.value === 'running')
 	const isStopping = computed(() => powerState.value === 'stopping')
diff --git a/packages/ui/src/composables/index.ts b/packages/ui/src/composables/index.ts
index 1c4540bbd2..2c294afd9b 100644
--- a/packages/ui/src/composables/index.ts
+++ b/packages/ui/src/composables/index.ts
@@ -14,7 +14,9 @@ export * from './scroll-indicator'
 export * from './server-backup'
 export * from './server-backups-queue'
 export * from './server-console'
+export * from './server-context-runtime'
 export * from './server-manage-core-runtime'
+export * from './server-panel-sync'
 export * from './server-permissions'
 export { applyEarsMod, removeEarsMod } from './skin-rendering/use-ears-mod-features'
 export * from './sticky-observer'
diff --git a/packages/ui/src/composables/server-context-runtime.ts b/packages/ui/src/composables/server-context-runtime.ts
new file mode 100644
index 0000000000..7c5616051b
--- /dev/null
+++ b/packages/ui/src/composables/server-context-runtime.ts
@@ -0,0 +1,350 @@
+import type { AbstractModrinthClient, Archon } from '@modrinth/api-client'
+import type { ComputedRef, Ref } from 'vue'
+import { onUnmounted, ref, watch } from 'vue'
+
+import { injectModrinthClient } from '../providers'
+
+type ReadableRef<T> = Ref<T> | ComputedRef<T>
+type RuntimeUnsubscriber = () => void
+
+type RuntimeReadyWaiter = {
+	resolve: () => void
+	reject: (error: Error) => void
+	timeout: ReturnType<typeof setTimeout>
+}
+
+type ServerContextRuntime = {
+	client: AbstractModrinthClient
+	serverId: string
+	leases: number
+	socketLeases: number
+	syncLeases: number
+	releaseTimer: ReturnType<typeof setTimeout> | null
+	socketReleaseTimer: ReturnType<typeof setTimeout> | null
+	syncReleaseTimer: ReturnType<typeof setTimeout> | null
+	connectPromise: Promise<void> | null
+	socketUnsubscribers: RuntimeUnsubscriber[]
+	installProgressItems: Ref<Archon.Websocket.v0.InstallProgressItem[]>
+	isSocketAuthenticated: Ref<boolean>
+	isSocketAuthIncorrect: Ref<boolean>
+	hasAuthoritativeInstallProgress: Ref<boolean>
+	readyWaiters: Set<RuntimeReadyWaiter>
+	destroyed: boolean
+}
+
+export type ServerContextRuntimeLease = {
+	serverId: string
+	installProgressItems: Ref<Archon.Websocket.v0.InstallProgressItem[]>
+	isSocketAuthenticated: Ref<boolean>
+	isSocketAuthIncorrect: Ref<boolean>
+	hasAuthoritativeInstallProgress: Ref<boolean>
+	waitUntilReady: () => Promise<void>
+	release: () => void
+}
+
+type RetainServerContextRuntimeOptions = {
+	connect?: boolean
+	socket?: boolean
+	sync?: boolean
+}
+
+const runtimeReleaseDelay = 1000
+const authoritativeReadinessTimeout = 30000
+const runtimesByClient = new WeakMap<AbstractModrinthClient, Map<string, ServerContextRuntime>>()
+
+function getClientRuntimes(client: AbstractModrinthClient) {
+	let runtimes = runtimesByClient.get(client)
+	if (!runtimes) {
+		runtimes = new Map()
+		runtimesByClient.set(client, runtimes)
+	}
+	return runtimes
+}
+
+function isRuntimeReady(runtime: ServerContextRuntime) {
+	return runtime.isSocketAuthenticated.value && runtime.hasAuthoritativeInstallProgress.value
+}
+
+function resolveReadyWaiters(runtime: ServerContextRuntime) {
+	if (!isRuntimeReady(runtime)) return
+
+	for (const waiter of runtime.readyWaiters) {
+		clearTimeout(waiter.timeout)
+		waiter.resolve()
+	}
+	runtime.readyWaiters.clear()
+}
+
+function createServerContextRuntime(
+	client: AbstractModrinthClient,
+	serverId: string,
+): ServerContextRuntime {
+	const runtime: ServerContextRuntime = {
+		client,
+		serverId,
+		leases: 0,
+		socketLeases: 0,
+		syncLeases: 0,
+		releaseTimer: null,
+		socketReleaseTimer: null,
+		syncReleaseTimer: null,
+		connectPromise: null,
+		socketUnsubscribers: [],
+		installProgressItems: ref([]),
+		isSocketAuthenticated: ref(false),
+		isSocketAuthIncorrect: ref(false),
+		hasAuthoritativeInstallProgress: ref(false),
+		readyWaiters: new Set(),
+		destroyed: false,
+	}
+
+	return runtime
+}
+
+function attachRuntimeSocketListeners(runtime: ServerContextRuntime) {
+	if (runtime.socketUnsubscribers.length > 0) return
+
+	runtime.socketUnsubscribers = [
+		runtime.client.archon.sockets.on(runtime.serverId, 'auth-ok', () => {
+			runtime.isSocketAuthenticated.value = true
+			runtime.isSocketAuthIncorrect.value = false
+			runtime.hasAuthoritativeInstallProgress.value = false
+		}),
+		runtime.client.archon.sockets.on(runtime.serverId, 'auth-incorrect', () => {
+			runtime.isSocketAuthenticated.value = false
+			runtime.isSocketAuthIncorrect.value = true
+			runtime.hasAuthoritativeInstallProgress.value = false
+		}),
+		runtime.client.archon.sockets.on(runtime.serverId, 'install-progress', (event) => {
+			runtime.installProgressItems.value = event.items
+			runtime.hasAuthoritativeInstallProgress.value = true
+			resolveReadyWaiters(runtime)
+		}),
+	]
+}
+
+function disconnectRuntimeSocket(runtime: ServerContextRuntime) {
+	for (const unsubscribe of runtime.socketUnsubscribers) unsubscribe()
+	runtime.socketUnsubscribers = []
+	runtime.client.archon.sockets.disconnect(runtime.serverId)
+	runtime.connectPromise = null
+	runtime.isSocketAuthenticated.value = false
+	runtime.isSocketAuthIncorrect.value = false
+	runtime.hasAuthoritativeInstallProgress.value = false
+	for (const waiter of runtime.readyWaiters) {
+		clearTimeout(waiter.timeout)
+		waiter.reject(new Error(`Node socket for server ${runtime.serverId} was released`))
+	}
+	runtime.readyWaiters.clear()
+}
+
+function disconnectRuntimeSync(runtime: ServerContextRuntime) {
+	runtime.client.archon.sync.disconnect(runtime.serverId)
+}
+
+async function ensureRuntimeConnections(
+	runtime: ServerContextRuntime,
+	options: RetainServerContextRuntimeOptions = {},
+) {
+	if (runtime.destroyed) {
+		throw new Error(`Server context runtime for ${runtime.serverId} has been released`)
+	}
+
+	const shouldConnectSocket = options.socket !== false
+	const shouldConnectSync = options.sync !== false
+	const socketStatus = runtime.client.archon.sockets.getStatus(runtime.serverId)
+	if (shouldConnectSocket && !socketStatus?.connected) {
+		attachRuntimeSocketListeners(runtime)
+		runtime.isSocketAuthenticated.value = false
+		runtime.hasAuthoritativeInstallProgress.value = false
+	}
+
+	if (shouldConnectSync) {
+		void runtime.client.archon.sync
+			.safeConnectServer(runtime.serverId, { intent: 'all' })
+			.catch((error) => {
+				console.warn(
+					`[server-context-runtime] Failed to connect sync stream for ${runtime.serverId}:`,
+					error,
+				)
+			})
+	}
+
+	if (shouldConnectSocket && !runtime.connectPromise) {
+		const connectPromise = runtime.client.archon.sockets
+			.safeConnect(runtime.serverId)
+			.then(() => {
+				runtime.isSocketAuthenticated.value = true
+			})
+			.finally(() => {
+				if (runtime.connectPromise === connectPromise) {
+					runtime.connectPromise = null
+				}
+			})
+		runtime.connectPromise = connectPromise
+	}
+
+	if (runtime.connectPromise) await runtime.connectPromise
+}
+
+async function waitUntilRuntimeReady(runtime: ServerContextRuntime) {
+	await ensureRuntimeConnections(runtime)
+	if (isRuntimeReady(runtime)) return
+
+	await new Promise<void>((resolve, reject) => {
+		const waiter: RuntimeReadyWaiter = {
+			resolve,
+			reject,
+			timeout: setTimeout(() => {
+				runtime.readyWaiters.delete(waiter)
+				reject(
+					new Error(
+						`Timed out waiting for authoritative install progress for server ${runtime.serverId}`,
+					),
+				)
+			}, authoritativeReadinessTimeout),
+		}
+		runtime.readyWaiters.add(waiter)
+		resolveReadyWaiters(runtime)
+	})
+}
+
+function destroyRuntime(runtime: ServerContextRuntime) {
+	if (runtime.destroyed || runtime.leases > 0) return
+	runtime.destroyed = true
+
+	if (runtime.socketReleaseTimer) clearTimeout(runtime.socketReleaseTimer)
+	if (runtime.syncReleaseTimer) clearTimeout(runtime.syncReleaseTimer)
+	disconnectRuntimeSocket(runtime)
+	disconnectRuntimeSync(runtime)
+
+	getClientRuntimes(runtime.client).delete(runtime.serverId)
+}
+
+export function retainServerContextRuntime(
+	client: AbstractModrinthClient,
+	serverId: string,
+	options: RetainServerContextRuntimeOptions = {},
+): ServerContextRuntimeLease {
+	const runtimes = getClientRuntimes(client)
+	let runtime = runtimes.get(serverId)
+	if (!runtime) {
+		runtime = createServerContextRuntime(client, serverId)
+		runtimes.set(serverId, runtime)
+	}
+
+	if (runtime.releaseTimer) {
+		clearTimeout(runtime.releaseTimer)
+		runtime.releaseTimer = null
+	}
+	const retainSocket = options.socket !== false
+	const retainSync = options.sync !== false
+	if (retainSocket) {
+		if (runtime.socketReleaseTimer) {
+			clearTimeout(runtime.socketReleaseTimer)
+			runtime.socketReleaseTimer = null
+		}
+		attachRuntimeSocketListeners(runtime)
+		runtime.socketLeases += 1
+	}
+	if (retainSync) {
+		if (runtime.syncReleaseTimer) {
+			clearTimeout(runtime.syncReleaseTimer)
+			runtime.syncReleaseTimer = null
+		}
+		runtime.syncLeases += 1
+	}
+	runtime.leases += 1
+	if (options.connect !== false) {
+		void ensureRuntimeConnections(runtime, options).catch((error) => {
+			if (runtime && runtime.leases > 0) {
+				console.warn(
+					`[server-context-runtime] Failed to connect node socket for ${serverId}:`,
+					error,
+				)
+			}
+		})
+	}
+
+	let released = false
+	return {
+		serverId,
+		installProgressItems: runtime.installProgressItems,
+		isSocketAuthenticated: runtime.isSocketAuthenticated,
+		isSocketAuthIncorrect: runtime.isSocketAuthIncorrect,
+		hasAuthoritativeInstallProgress: runtime.hasAuthoritativeInstallProgress,
+		waitUntilReady: () => waitUntilRuntimeReady(runtime),
+		release: () => {
+			if (released) return
+			released = true
+			runtime.leases = Math.max(0, runtime.leases - 1)
+			if (retainSocket) {
+				runtime.socketLeases = Math.max(0, runtime.socketLeases - 1)
+			}
+			if (retainSync) {
+				runtime.syncLeases = Math.max(0, runtime.syncLeases - 1)
+			}
+
+			if (runtime.leases === 0) {
+				if (runtime.socketReleaseTimer) clearTimeout(runtime.socketReleaseTimer)
+				if (runtime.syncReleaseTimer) clearTimeout(runtime.syncReleaseTimer)
+				runtime.socketReleaseTimer = null
+				runtime.syncReleaseTimer = null
+				runtime.releaseTimer = setTimeout(() => {
+					runtime.releaseTimer = null
+					destroyRuntime(runtime)
+				}, runtimeReleaseDelay)
+				return
+			}
+
+			if (retainSocket && runtime.socketLeases === 0) {
+				runtime.socketReleaseTimer = setTimeout(() => {
+					runtime.socketReleaseTimer = null
+					if (runtime.socketLeases === 0) disconnectRuntimeSocket(runtime)
+				}, runtimeReleaseDelay)
+			}
+			if (retainSync && runtime.syncLeases === 0) {
+				runtime.syncReleaseTimer = setTimeout(() => {
+					runtime.syncReleaseTimer = null
+					if (runtime.syncLeases === 0) disconnectRuntimeSync(runtime)
+				}, runtimeReleaseDelay)
+			}
+		},
+	}
+}
+
+export function useServerContextRuntime(serverId: ReadableRef<string | null>) {
+	const client = injectModrinthClient()
+	let lease: ServerContextRuntimeLease | null = null
+
+	const stop = watch(
+		() => serverId.value,
+		(nextServerId) => {
+			lease?.release()
+			lease = null
+
+			if (typeof window !== 'undefined' && nextServerId) {
+				lease = retainServerContextRuntime(client, nextServerId)
+			}
+		},
+		{ immediate: true },
+	)
+
+	onUnmounted(() => {
+		stop()
+		lease?.release()
+		lease = null
+	})
+}
+
+export async function waitForServerContextRuntimeReady(
+	client: AbstractModrinthClient,
+	serverId: string,
+) {
+	const lease = retainServerContextRuntime(client, serverId)
+	try {
+		await lease.waitUntilReady()
+	} finally {
+		lease.release()
+	}
+}
diff --git a/packages/ui/src/composables/server-installation-tracker.ts b/packages/ui/src/composables/server-installation-tracker.ts
new file mode 100644
index 0000000000..09063b12a1
--- /dev/null
+++ b/packages/ui/src/composables/server-installation-tracker.ts
@@ -0,0 +1,297 @@
+import type { Archon } from '@modrinth/api-client'
+import type { ComputedRef, Ref } from 'vue'
+import { computed, ref, watch } from 'vue'
+
+type ReadableRef<T> = Ref<T> | ComputedRef<T>
+
+export type ServerInstallationKey =
+	| Exclude<Archon.Websocket.v0.InstallProgressKey, { type: 'file' }>
+	| { type: 'unknown' }
+
+export type ServerInstallationState = {
+	id: string
+	key: ServerInstallationKey
+	status: 'pending' | 'installing' | 'complete' | 'failed'
+	progress: number | null
+	error: string | null
+	source: 'optimistic' | 'websocket' | 'server'
+}
+
+type OptimisticInstallation = {
+	id: string
+	key: ServerInstallationKey
+	startRevision: number
+}
+
+type UseServerInstallationTrackerOptions = {
+	worldId: ReadableRef<string | null>
+	server: ReadableRef<Archon.Servers.v0.Server | null | undefined>
+	content?: ReadableRef<Archon.Content.v1.Addons | null | undefined>
+}
+
+type ServerInstallationPlatform = Extract<
+	ServerInstallationKey,
+	{ type: 'platform' }
+>['platform']
+
+function installationKeyId(key: ServerInstallationKey) {
+	switch (key.type) {
+		case 'platform':
+			return `platform:${key.platform}:${key.platform_version}:${key.game_version}`
+		case 'modrinth_modpack':
+			return `modrinth-modpack:${key.project_id}:${key.version_id}`
+		case 'local_modpack':
+			return `local-modpack:${key.filename}`
+		case 'unknown':
+			return 'unknown'
+	}
+}
+
+function itemStatus(
+	item: Archon.Websocket.v0.InstallProgressItem,
+): ServerInstallationState['status'] {
+	if (item.error != null) return 'failed'
+	if (item.progress === 100) return 'complete'
+	return 'installing'
+}
+
+function contentPlatform(modloader: string | null): ServerInstallationPlatform | null {
+	const platform = modloader === 'neo_forge' ? 'neoforge' : modloader
+	switch (platform) {
+		case 'forge':
+		case 'neoforge':
+		case 'fabric':
+		case 'quilt':
+		case 'paper':
+		case 'purpur':
+		case 'vanilla':
+			return platform
+		default:
+			return null
+	}
+}
+
+function contentInstallationKey(content: Archon.Content.v1.Addons): ServerInstallationKey {
+	if (content.installing === 'modpack' || (content.error && content.modpack)) {
+		const spec = content.modpack?.spec
+		if (spec?.platform === 'modrinth') {
+			return {
+				type: 'modrinth_modpack',
+				project_id: spec.project_id,
+				version_id: spec.version_id,
+			}
+		}
+		if (spec?.platform === 'local_file') {
+			return {
+				type: 'local_modpack',
+				filename: spec.filename,
+			}
+		}
+		return { type: 'unknown' }
+	}
+
+	const platform = contentPlatform(content.modloader)
+	if (platform && content.game_version) {
+		return {
+			type: 'platform',
+			platform,
+			platform_version: content.modloader_version ?? '',
+			game_version: content.game_version,
+		}
+	}
+
+	return { type: 'unknown' }
+}
+
+export function useServerInstallationTracker(options: UseServerInstallationTrackerOptions) {
+	const installProgressItems = ref<Archon.Websocket.v0.InstallProgressItem[]>([])
+	const optimisticInstallation = ref<OptimisticInstallation | null>(null)
+	const receivedProgressSnapshot = ref(false)
+	const snapshotRevision = ref(0)
+	const seenActiveIds = ref(new Set<string>())
+	const dismissedIds = ref(new Set<string>())
+	let unknownInstallationId = 0
+
+	const currentWorldItems = computed(() =>
+		installProgressItems.value.filter((item) => item.world_id === options.worldId.value),
+	)
+
+	const websocketInstallation = computed<ServerInstallationState | null>(() => {
+		const optimistic = optimisticInstallation.value
+		const candidates = currentWorldItems.value.filter(
+			(item) => item.key.type !== 'file' && !dismissedIds.value.has(installationKeyId(item.key)),
+		)
+
+		for (const item of candidates) {
+			if (item.key.type === 'file') continue
+			const id = installationKeyId(item.key)
+			const status = itemStatus(item)
+			if (status === 'complete') {
+				if (
+					optimistic &&
+					snapshotRevision.value <= optimistic.startRevision &&
+					!seenActiveIds.value.has(id)
+				) {
+					continue
+				}
+				if (
+					!optimistic &&
+					!seenActiveIds.value.has(id) &&
+					options.server.value?.status !== 'installing'
+				) {
+					continue
+				}
+			}
+
+			return {
+				id,
+				key: item.key,
+				status,
+				progress: item.progress,
+				error: item.error,
+				source: 'websocket',
+			}
+		}
+
+		return null
+	})
+
+	const persistedInstallation = computed<ServerInstallationState | null>(() => {
+		const content = options.content?.value
+		if (!content || (!content.installing && !content.error)) return null
+
+		const key = contentInstallationKey(content)
+		const id = installationKeyId(key)
+		if (dismissedIds.value.has(id)) return null
+
+		return {
+			id,
+			key,
+			status: content.error ? 'failed' : 'installing',
+			progress: null,
+			error: content.error?.message ?? null,
+			source: 'server',
+		}
+	})
+
+	watch(
+		() => options.content?.value,
+		(content) => {
+			if (!content?.installing || content.error) return
+			const id = installationKeyId(contentInstallationKey(content))
+			if (dismissedIds.value.has(id)) {
+				dismissedIds.value = new Set([...dismissedIds.value].filter((item) => item !== id))
+			}
+			optimisticInstallation.value = null
+		},
+	)
+
+	const installation = computed<ServerInstallationState | null>(() => {
+		if (websocketInstallation.value) return websocketInstallation.value
+
+		const optimistic = optimisticInstallation.value
+		if (optimistic && !dismissedIds.value.has(optimistic.id)) {
+			return {
+				id: optimistic.id,
+				key: optimistic.key,
+				status: 'pending',
+				progress: null,
+				error: null,
+				source: 'optimistic',
+			}
+		}
+
+		if (persistedInstallation.value) return persistedInstallation.value
+		if (options.content?.value?.error) return null
+
+		if (options.server.value?.status !== 'installing' || receivedProgressSnapshot.value) return null
+
+		return {
+			id: `unknown:${unknownInstallationId}`,
+			key: { type: 'unknown' },
+			status: 'installing',
+			progress: null,
+			error: null,
+			source: 'server',
+		}
+	})
+
+	const isBlocking = computed(
+		() => installation.value?.status === 'pending' || installation.value?.status === 'installing',
+	)
+
+	function handleProgress(items: Archon.Websocket.v0.InstallProgressItem[]) {
+		snapshotRevision.value += 1
+		receivedProgressSnapshot.value = true
+		installProgressItems.value = items
+
+		const optimistic = optimisticInstallation.value
+		const isPostOptimisticSnapshot =
+			optimistic !== null && snapshotRevision.value > optimistic.startRevision
+		const nextSeenActiveIds = new Set(seenActiveIds.value)
+		const nextDismissedIds = new Set(dismissedIds.value)
+		let hasAuthoritativeInstallation = false
+		for (const item of items) {
+			if (item.world_id !== options.worldId.value || item.key.type === 'file') continue
+			hasAuthoritativeInstallation = true
+			const id = installationKeyId(item.key)
+			if (isPostOptimisticSnapshot) {
+				nextDismissedIds.delete(id)
+			}
+			if (item.error == null && item.progress != null && item.progress < 100) {
+				nextSeenActiveIds.add(id)
+				nextDismissedIds.delete(id)
+			}
+		}
+		seenActiveIds.value = nextSeenActiveIds
+		dismissedIds.value = nextDismissedIds
+		if (hasAuthoritativeInstallation) {
+			optimisticInstallation.value = null
+		}
+	}
+
+	function begin(key: ServerInstallationKey) {
+		const id =
+			key.type === 'unknown' ? `unknown:${++unknownInstallationId}` : installationKeyId(key)
+		const nextDismissedIds = new Set(dismissedIds.value)
+		nextDismissedIds.delete(id)
+		dismissedIds.value = nextDismissedIds
+		optimisticInstallation.value = {
+			id,
+			key,
+			startRevision: snapshotRevision.value,
+		}
+	}
+
+	function cancelOptimistic() {
+		optimisticInstallation.value = null
+	}
+
+	function dismiss(id: string) {
+		dismissedIds.value = new Set([...dismissedIds.value, id])
+		if (optimisticInstallation.value?.id === id) {
+			optimisticInstallation.value = null
+		}
+	}
+
+	function reset() {
+		installProgressItems.value = []
+		optimisticInstallation.value = null
+		receivedProgressSnapshot.value = false
+		snapshotRevision.value = 0
+		seenActiveIds.value = new Set()
+		dismissedIds.value = new Set()
+		unknownInstallationId = 0
+	}
+
+	return {
+		begin,
+		cancelOptimistic,
+		dismiss,
+		handleProgress,
+		installation,
+		installProgressItems,
+		isBlocking,
+		reset,
+	}
+}
diff --git a/packages/ui/src/composables/server-manage-core-runtime.ts b/packages/ui/src/composables/server-manage-core-runtime.ts
index e74799361a..312ff5b01f 100644
--- a/packages/ui/src/composables/server-manage-core-runtime.ts
+++ b/packages/ui/src/composables/server-manage-core-runtime.ts
@@ -5,19 +5,23 @@ import {
 	type UploadState,
 } from '@modrinth/api-client'
 import type { ComputedRef, Ref } from 'vue'
-import { computed, ref } from 'vue'
+import { computed, ref, watch } from 'vue'
 
 import type { FileOperation } from '../layouts/shared/files-tab/types'
 import { injectModrinthClient, provideModrinthServerContext } from '../providers'
 import type { BusyReason, CancelUploadHandler, ServerStats } from '../providers/server-context'
 import { defineMessage } from './i18n'
 import { useModrinthServersConsole } from './server-console'
+import {
+	retainServerContextRuntime,
+	type ServerContextRuntimeLease,
+} from './server-context-runtime'
+import { useServerInstallationTracker } from './server-installation-tracker'
 
 type ReadableRef<T> = Ref<T> | ComputedRef<T>
 type SocketUnsubscriber = () => void
 
 type ConnectSocketOptions = {
-	force?: boolean
 	extraSubscriptions?: (targetServerId: string) => SocketUnsubscriber[]
 }
 
@@ -26,7 +30,7 @@ type UseServerManageCoreRuntimeOptions = {
 	worldId: ReadableRef<string | null>
 	server: ReadableRef<Archon.Servers.v0.Server | null | undefined>
 	serverFull?: ReadableRef<Archon.Servers.v1.ServerFull | null | undefined>
-	isSyncingContent: ReadableRef<boolean>
+	content?: ReadableRef<Archon.Content.v1.Addons | null | undefined>
 	extraBusyReasons?: ComputedRef<BusyReason[]>
 	setDisconnectedOnAuthIncorrect?: boolean
 	syncUptimeFromState?: boolean
@@ -96,10 +100,25 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 	const fsAuth = ref<{ url: string; token: string } | null>(null)
 	const fsOps = ref<Archon.Websocket.v0.FilesystemOperation[]>([])
 	const fsQueuedOps = ref<Archon.Websocket.v0.QueuedFilesystemOp[]>([])
+	const {
+		begin: beginInstallation,
+		cancelOptimistic: cancelOptimisticInstallation,
+		dismiss: dismissInstallation,
+		handleProgress: handleInstallProgress,
+		installation,
+		installProgressItems,
+		isBlocking: isInstallationBlocking,
+		reset: resetInstallation,
+	} = useServerInstallationTracker({
+		worldId: options.worldId,
+		server: options.server,
+		content: options.content,
+	})
 	const connectedSocketServerId = ref<string | null>(null)
 	const socketUnsubscribers = ref<SocketUnsubscriber[]>([])
 	const cpuData = ref<number[]>([])
 	const ramData = ref<number[]>([])
+	let serverContextRuntimeLease: ServerContextRuntimeLease | null = null
 
 	let uptimeIntervalId: ReturnType<typeof setInterval> | null = null
 	let staleStatsTimeoutId: ReturnType<typeof setTimeout> | null = null
@@ -107,7 +126,7 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 
 	const busyReasons = computed<BusyReason[]>(() => {
 		const reasons: BusyReason[] = []
-		if (options.server.value?.status === 'installing') {
+		if (isInstallationBlocking.value) {
 			reasons.push({
 				reason: defineMessage({
 					id: 'servers.busy.installing',
@@ -115,14 +134,6 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 				}),
 			})
 		}
-		if (options.isSyncingContent.value) {
-			reasons.push({
-				reason: defineMessage({
-					id: 'servers.busy.syncing-content',
-					defaultMessage: 'Content sync in progress',
-				}),
-			})
-		}
 		if (options.extraBusyReasons) reasons.push(...options.extraBusyReasons.value)
 		return reasons
 	})
@@ -265,20 +276,6 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 		startUptimeTicker()
 	}
 
-	const handleAuthIncorrect = () => {
-		if (!shouldProcessEvent()) return
-		isWsAuthIncorrect.value = true
-		if (options.setDisconnectedOnAuthIncorrect) {
-			isConnected.value = false
-		}
-	}
-
-	const handleAuthOk = () => {
-		if (!shouldProcessEvent()) return
-		isWsAuthIncorrect.value = false
-		isConnected.value = true
-	}
-
 	const clearSocketListeners = () => {
 		for (const unsub of socketUnsubscribers.value) unsub()
 		socketUnsubscribers.value = []
@@ -288,10 +285,8 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 		if (!targetServerId && !connectedSocketServerId.value) return
 
 		clearSocketListeners()
-
-		if (targetServerId) {
-			client.archon.sockets.disconnect(targetServerId)
-		}
+		serverContextRuntimeLease?.release()
+		serverContextRuntimeLease = null
 
 		stopUptimeTicker()
 		clearStaleStatsTimers()
@@ -301,6 +296,7 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 		serverPowerState.value = 'stopped'
 		powerStateDetails.value = undefined
 		uptimeSeconds.value = 0
+		resetInstallation()
 	}
 
 	const connectSocket = async (
@@ -317,14 +313,11 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 		disconnectSocket(connectedSocketServerId.value ?? undefined)
 
 		try {
-			const safeConnectOptions = connectOptions.force ? { force: true } : undefined
-			await client.archon.sockets.safeConnect(targetServerId, safeConnectOptions)
+			const runtimeLease = retainServerContextRuntime(client, targetServerId, {
+				connect: false,
+			})
+			serverContextRuntimeLease = runtimeLease
 			connectedSocketServerId.value = targetServerId
-			isConnected.value = true
-			isWsAuthIncorrect.value = false
-
-			modrinthServersConsole.clear()
-			modrinthServersConsole.beginInitialLogHydration()
 
 			const baseSubscriptions: SocketUnsubscriber[] = [
 				client.archon.sockets.on(targetServerId, 'log', handleLog),
@@ -333,15 +326,45 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 				client.archon.sockets.on(targetServerId, 'state', handleState),
 				client.archon.sockets.on(targetServerId, 'power-state', handlePowerState),
 				client.archon.sockets.on(targetServerId, 'uptime', handleUptime),
-				client.archon.sockets.on(targetServerId, 'auth-incorrect', handleAuthIncorrect),
-				client.archon.sockets.on(targetServerId, 'auth-ok', handleAuthOk),
+				watch(
+					runtimeLease.installProgressItems,
+					(items) => {
+						if (shouldProcessEvent()) handleInstallProgress(items)
+					},
+					{ immediate: true },
+				),
+				watch(
+					runtimeLease.isSocketAuthenticated,
+					(authenticated) => {
+						if (!shouldProcessEvent()) return
+						if (authenticated || options.setDisconnectedOnAuthIncorrect) {
+							isConnected.value = authenticated
+						}
+					},
+					{ immediate: true },
+				),
+				watch(
+					runtimeLease.isSocketAuthIncorrect,
+					(authIncorrect) => {
+						if (shouldProcessEvent()) isWsAuthIncorrect.value = authIncorrect
+					},
+					{ immediate: true },
+				),
 			]
 			const extraSubscriptions = connectOptions.extraSubscriptions?.(targetServerId) ?? []
 			socketUnsubscribers.value = [...baseSubscriptions, ...extraSubscriptions]
+
+			modrinthServersConsole.clear()
+			modrinthServersConsole.beginInitialLogHydration()
+
+			await runtimeLease.waitUntilReady()
+			isConnected.value = true
+			isWsAuthIncorrect.value = false
+
 			return true
 		} catch (error) {
 			console.error('[hosting/manage] Failed to connect server socket:', error)
-			isConnected.value = false
+			disconnectSocket(targetServerId)
 			return false
 		}
 	}
@@ -402,7 +425,11 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 		isServerRunning,
 		stats,
 		uptimeSeconds,
-		isSyncingContent: options.isSyncingContent as Ref<boolean>,
+		installProgressItems,
+		installation,
+		beginInstallation,
+		cancelOptimisticInstallation,
+		dismissInstallation,
 		busyReasons,
 		fsAuth,
 		fsOps,
@@ -423,20 +450,25 @@ export function useServerManageCoreRuntime(options: UseServerManageCoreRuntimeOp
 
 	return {
 		activeOperations,
+		beginInstallation,
 		busyReasons,
 		cancelUpload,
+		cancelOptimisticInstallation,
 		cleanupCoreRuntime,
 		connectSocket,
 		connectedSocketServerId,
 		cpuData,
 		disconnectSocket,
+		dismissInstallation,
 		dismissOperation,
 		fsAuth,
 		fsOps,
 		fsQueuedOps,
+		installation,
 		isConnected,
 		isServerRunning,
 		isWsAuthIncorrect,
+		installProgressItems,
 		powerStateDetails,
 		ramData,
 		refreshFsAuth,
diff --git a/packages/ui/src/composables/server-panel-sync.ts b/packages/ui/src/composables/server-panel-sync.ts
index fa9d7f9ef3..1e213f7e99 100644
--- a/packages/ui/src/composables/server-panel-sync.ts
+++ b/packages/ui/src/composables/server-panel-sync.ts
@@ -5,11 +5,16 @@ import { onMounted, onUnmounted, watch } from 'vue'
 
 import { injectModrinthClient } from '#ui/providers'
 
+import {
+	retainServerContextRuntime,
+	type ServerContextRuntimeLease,
+} from './server-context-runtime'
+
 type ReadableRef<T> = Ref<T> | ComputedRef<T>
 type SyncUnsubscriber = () => void
 
 type UseServerPanelSyncOptions = {
-	serverId: ReadableRef<string>
+	serverId: ReadableRef<string | null>
 	worldId: ReadableRef<string | null>
 }
 
@@ -20,6 +25,7 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 	const queryClient = useQueryClient()
 
 	let activeServerId: string | null = null
+	let runtimeLease: ServerContextRuntimeLease | null = null
 	let unsubscribers: SyncUnsubscriber[] = []
 	let mounted = false
 	let actionLogInvalidateTimer: ReturnType<typeof setTimeout> | null = null
@@ -27,6 +33,8 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 	const legacyServerDetailKey = (serverId: string) => ['servers', 'detail', serverId] as const
 	const serverV1DetailKey = (serverId: string) => ['servers', 'v1', 'detail', serverId] as const
 	const contentListKey = (serverId: string) => ['content', 'list', 'v1', serverId] as const
+	const modpackContentListKey = (serverId: string) =>
+		['content', 'list', 'v1', serverId, 'modpack'] as const
 	const actionLogBaseKey = (serverId: string) =>
 		['servers', 'action-log', 'v1', 'infinite', serverId] as const
 
@@ -43,12 +51,9 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 		unsubscribers = [
 			client.archon.sync.onAny(targetServerId, (event) => handleSyncEvent(targetServerId, event)),
 		]
-
-		void client.archon.sync.safeConnectServer(targetServerId, { intent: 'all' }).catch((error) => {
-			console.warn(
-				`[server-panel-sync] Failed to connect sync stream for ${targetServerId}:`,
-				error,
-			)
+		runtimeLease = retainServerContextRuntime(client, targetServerId, {
+			socket: false,
+			sync: true,
 		})
 	}
 
@@ -61,10 +66,9 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 		for (const unsubscribe of unsubscribers) unsubscribe()
 		unsubscribers = []
 
-		if (activeServerId) {
-			client.archon.sync.disconnect(activeServerId)
-			activeServerId = null
-		}
+		runtimeLease?.release()
+		runtimeLease = null
+		activeServerId = null
 	}
 
 	function handleSyncEvent(serverId: string, event: Archon.Sync.v1.SyncEvent) {
@@ -111,6 +115,9 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 			case 'world.content.base.update':
 				handleWorldContentBaseUpdate(serverId, event)
 				break
+			case 'world.content.update':
+				handleWorldContentUpdate(serverId, event)
+				break
 		}
 	}
 
@@ -217,6 +224,110 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 		void queryClient.invalidateQueries({ queryKey: serverV1DetailKey(serverId) })
 	}
 
+	function handleWorldContentUpdate(
+		serverId: string,
+		event: Archon.Sync.v1.WorldContentUpdateEvent,
+	) {
+		if (event.world_id !== options.worldId.value) {
+			void invalidateContentAndServerDetails(serverId)
+			return
+		}
+
+		const content = worldContentUpdateToAddons(event)
+		queryClient.setQueryData<Archon.Content.v1.Addons>(contentListKey(serverId), {
+			...content,
+			addons: content.addons?.filter((addon) => !addon.from_modpack) ?? null,
+		})
+		queryClient.setQueryData<Archon.Content.v1.Addons>(modpackContentListKey(serverId), {
+			...content,
+			addons: content.addons?.filter((addon) => addon.from_modpack) ?? null,
+		})
+		void queryClient.invalidateQueries({ queryKey: serverV1DetailKey(serverId) })
+	}
+
+	function worldContentUpdateToAddons(
+		event: Archon.Sync.v1.WorldContentUpdateEvent,
+	): Archon.Content.v1.Addons {
+		return {
+			modloader: event.platform_data?.platform ?? null,
+			modloader_version: event.platform_data?.platform_version ?? null,
+			game_version: event.platform_data?.game_version ?? null,
+			modpack: worldContentModpackToModpackFields(event.linked_modpack),
+			installing: event.installing,
+			error: event.error,
+			addons: event.content.map(worldContentItemToAddon),
+		}
+	}
+
+	function worldContentModpackToModpackFields(
+		modpack: Archon.Sync.v1.WorldContentModpack | null,
+	): Archon.Content.v1.ModpackFields | null {
+		if (!modpack || modpack.spec === 'CurseForge') return null
+
+		const spec: Archon.Content.v1.ModpackSpec =
+			'Modrinth' in modpack.spec
+				? {
+						platform: 'modrinth',
+						project_id: modpack.spec.Modrinth.project_id,
+						version_id: modpack.spec.Modrinth.version_id,
+					}
+				: {
+						platform: 'local_file',
+						filename: modpack.spec.LocalMrPackFile.path,
+						name: modpack.spec.LocalMrPackFile.name,
+						description: modpack.spec.LocalMrPackFile.description,
+					}
+
+		return {
+			spec,
+			has_update: modpack.has_update,
+			title: modpack.title,
+			description: modpack.description,
+			icon_url: modpack.icon_url,
+			owner: modpack.owner,
+			version_number: modpack.version_number,
+			date_published: modpack.date_published,
+			downloads: modpack.downloads,
+			followers: modpack.followers,
+		}
+	}
+
+	function worldContentItemToAddon(
+		item: Archon.Sync.v1.WorldContentItem,
+	): Archon.Content.v1.Addon {
+		return {
+			id: item.version?.id ?? item.version_id ?? item.file_sha1 ?? item.filename,
+			filename: item.filename,
+			filesize: item.filesize ?? 0,
+			btime: item.btime,
+			disabled: item.filename.endsWith('.disabled'),
+			kind: parentDirectoryToAddonKind(item.parent_directory),
+			from_modpack: item.from_modpack,
+			status: item.status,
+			pack_client_retained: item.pack_client_retained,
+			pack_client_depends: item.pack_client_depends,
+			has_update: item.has_update,
+			name: item.name,
+			project_id: item.project_id,
+			version: item.version,
+			owner: item.owner,
+			icon_url: item.icon_url,
+		}
+	}
+
+	function parentDirectoryToAddonKind(
+		parentDirectory: string,
+	): Archon.Content.v1.AddonKind {
+		switch (parentDirectory) {
+			case 'plugins':
+				return 'plugin'
+			case 'datapacks':
+				return 'datapack'
+			default:
+				return 'mod'
+		}
+	}
+
 	function handleBackupEvent(serverId: string) {
 		void queryClient.invalidateQueries({ queryKey: ['backups', 'queue', serverId] })
 		void invalidateServerDetails(serverId)
@@ -297,7 +408,9 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 		return {
 			...current,
 			...incoming,
+			status: incoming.status ?? current.status,
 			filesize: incoming.filesize || current.filesize,
+			btime: incoming.btime ?? current.btime,
 			name: incoming.name ?? current.name,
 			owner: incoming.owner ?? current.owner,
 			icon_url: incoming.icon_url ?? current.icon_url,
@@ -319,7 +432,7 @@ export function useServerPanelSync(options: UseServerPanelSyncOptions) {
 
 	onMounted(() => {
 		mounted = true
-		connect(options.serverId.value)
+		if (options.serverId.value) connect(options.serverId.value)
 	})
 
 	watch(
diff --git a/packages/ui/src/layouts/shared/browse-tab/composables/install-logic.ts b/packages/ui/src/layouts/shared/browse-tab/composables/install-logic.ts
index fe39fb2e2b..359a8c8d82 100644
--- a/packages/ui/src/layouts/shared/browse-tab/composables/install-logic.ts
+++ b/packages/ui/src/layouts/shared/browse-tab/composables/install-logic.ts
@@ -53,9 +53,6 @@ export interface BrowseInstallPlan<TProject extends BrowseInstallProject = Brows
 	project: TProject
 	projectId: string
 	versionId: string
-	versionName?: string
-	versionNumber?: string
-	fileName?: string
 	contentType: BrowseInstallContentType
 	preferences: BrowseInstallPreferences
 	source: BrowseInstallPlanSource
@@ -567,15 +564,10 @@ export async function resolveInstallPlan<TProject extends BrowseInstallProject>(
 		const version = getLatestMatchingInstallVersion(versions, candidate.preferences)
 
 		if (version) {
-			const fileName =
-				version.files.find((file) => file.primary)?.filename ?? version.files[0]?.filename
 			return {
 				project: options.project,
 				projectId,
 				versionId: version.id,
-				versionName: version.name,
-				versionNumber: version.version_number,
-				fileName,
 				contentType: options.contentType,
 				preferences: candidate.preferences,
 				source: candidate.source,
diff --git a/packages/ui/src/layouts/shared/content-tab/components/ContentCardItem.vue b/packages/ui/src/layouts/shared/content-tab/components/ContentCardItem.vue
index 1070c4fc84..139432ff8b 100644
--- a/packages/ui/src/layouts/shared/content-tab/components/ContentCardItem.vue
+++ b/packages/ui/src/layouts/shared/content-tab/components/ContentCardItem.vue
@@ -18,6 +18,7 @@ import BulletDivider from '#ui/components/base/BulletDivider.vue'
 import type { OverflowMenuOption } from '#ui/components/base/buttons'
 import { IconButton, TeleportOverflowMenu } from '#ui/components/base/buttons'
 import Checkbox from '#ui/components/base/Checkbox.vue'
+import ProgressSpinner from '#ui/components/base/ProgressSpinner.vue'
 import Toggle from '#ui/components/base/Toggle.vue'
 import { defineMessages, useVIntl } from '#ui/composables/i18n'
 import { commonMessages } from '#ui/utils/common-messages'
@@ -49,6 +50,7 @@ interface Props {
 	source?: ContentSource
 	enabled?: boolean
 	installing?: boolean
+	installProgress?: number | null
 	hasUpdate?: boolean
 	isClientOnly?: boolean
 	clientWarning?: ClientWarningType | null
@@ -72,6 +74,7 @@ const props = withDefaults(defineProps<Props>(), {
 	source: undefined,
 	enabled: undefined,
 	installing: false,
+	installProgress: undefined,
 	hasUpdate: false,
 	isClientOnly: false,
 	clientWarning: null,
@@ -123,6 +126,11 @@ const clientWarningMessage = computed(() => {
 
 const { shift: shiftHeld } = useMagicKeys()
 const deleteHovered = ref(false)
+const installTooltip = computed(() => {
+	if (!props.installing) return undefined
+	if (props.installProgress == null) return formatMessage(commonMessages.installingLabel)
+	return `${formatMessage(commonMessages.installingLabel)} (${Math.round(props.installProgress)}%)`
+})
 </script>
 
 <template>
@@ -146,6 +154,7 @@ const deleteHovered = ref(false)
 				v-if="showCheckbox"
 				:model-value="selected ?? false"
 				:aria-label="formatMessage(messages.selectProject, { project: project.title })"
+				:disabled="isDisabled"
 				class="shrink-0"
 				@update:model-value="(value, event) => emit('select', value, event)"
 			/>
@@ -154,10 +163,7 @@ const deleteHovered = ref(false)
 				class="flex min-w-0 items-center gap-3 transition-[filter,opacity] duration-200"
 				:class="enabled === false && !disabled ? 'grayscale opacity-50' : ''"
 			>
-				<div
-					v-tooltip="installing ? formatMessage(commonMessages.installingLabel) : undefined"
-					class="relative flex shrink-0 items-center"
-				>
+				<div v-tooltip="installTooltip" class="relative flex shrink-0 items-center">
 					<Avatar
 						:src="project.icon_url"
 						:alt="project.title"
@@ -169,7 +175,13 @@ const deleteHovered = ref(false)
 						v-if="installing"
 						class="absolute inset-0 flex items-center justify-center rounded-2xl bg-black/20"
 					>
-						<SpinnerIcon class="size-5 animate-spin text-white" />
+						<ProgressSpinner
+							v-if="installProgress != null && installProgress > 0"
+							:progress="installProgress"
+							:max="100"
+							class="size-5 text-white"
+						/>
+						<SpinnerIcon v-else class="size-5 animate-spin text-white" />
 					</div>
 				</div>
 				<div class="flex min-w-0 flex-col gap-0.5">
diff --git a/packages/ui/src/layouts/shared/content-tab/components/ContentCardTable.vue b/packages/ui/src/layouts/shared/content-tab/components/ContentCardTable.vue
index 146c818eb0..2931dd05bc 100644
--- a/packages/ui/src/layouts/shared/content-tab/components/ContentCardTable.vue
+++ b/packages/ui/src/layouts/shared/content-tab/components/ContentCardTable.vue
@@ -104,20 +104,24 @@ defineExpose({
 })
 
 // Selection logic
+const selectableItems = computed(() => props.items.filter((item) => !item.disabled))
+
 const allSelected = computed(() => {
-	if (props.items.length === 0) return false
-	return props.items.every((item) => selectedIds.value.includes(item.id))
+	if (selectableItems.value.length === 0) return false
+	return selectableItems.value.every((item) => selectedIds.value.includes(item.id))
 })
 
 const someSelected = computed(() => {
-	return props.items.some((item) => selectedIds.value.includes(item.id)) && !allSelected.value
+	return (
+		selectableItems.value.some((item) => selectedIds.value.includes(item.id)) && !allSelected.value
+	)
 })
 
 function toggleSelectAll() {
 	if (allSelected.value || someSelected.value) {
 		selectedIds.value = []
 	} else {
-		selectedIds.value = props.items.map((item) => item.id)
+		selectedIds.value = selectableItems.value.map((item) => item.id)
 	}
 }
 
@@ -132,7 +136,10 @@ function toggleItemSelection(
 	if (selected && event?.shiftKey && lastSelectedIndex.value !== null && index !== undefined) {
 		const start = Math.min(lastSelectedIndex.value, index)
 		const end = Math.max(lastSelectedIndex.value, index)
-		const rangeIds = props.items.slice(start, end + 1).map((item) => item.id)
+		const rangeIds = props.items
+			.slice(start, end + 1)
+			.filter((item) => !item.disabled)
+			.map((item) => item.id)
 		const merged = new Set([...selectedIds.value, ...rangeIds])
 		selectedIds.value = [...merged]
 	} else if (selected) {
@@ -192,6 +199,7 @@ function handleSort(column: ContentCardTableSortColumn) {
 					:model-value="allSelected"
 					:indeterminate="someSelected"
 					:aria-label="formatMessage(commonMessages.selectAllLabel)"
+					:disabled="selectableItems.length === 0"
 					class="shrink-0"
 					@update:model-value="toggleSelectAll"
 				/>
@@ -267,6 +275,7 @@ function handleSort(column: ContentCardTableSortColumn) {
 					:source="item.source"
 					:enabled="item.enabled"
 					:installing="item.installing"
+					:install-progress="item.installProgress"
 					:has-update="item.hasUpdate"
 					:is-client-only="item.isClientOnly"
 					:client-warning="item.clientWarning"
@@ -331,6 +340,7 @@ function handleSort(column: ContentCardTableSortColumn) {
 				:source="item.source"
 				:enabled="item.enabled"
 				:installing="item.installing"
+				:install-progress="item.installProgress"
 				:has-update="item.hasUpdate"
 				:is-client-only="item.isClientOnly"
 				:client-warning="item.clientWarning"
diff --git a/packages/ui/src/layouts/shared/content-tab/layout.vue b/packages/ui/src/layouts/shared/content-tab/layout.vue
index 2ec27bb643..c9d506eb97 100644
--- a/packages/ui/src/layouts/shared/content-tab/layout.vue
+++ b/packages/ui/src/layouts/shared/content-tab/layout.vue
@@ -285,6 +285,7 @@ const tableItems = computed<ContentCardTableItem[]>(() => {
 			toggleDisabled: ctx.isBusy.value,
 			toggleDisabledTooltip: ctx.isBusy.value ? (ctx.busyMessage?.value ?? null) : null,
 			installing: item.installing === true,
+			installProgress: item.installProgress,
 			hasUpdate: base.hasUpdate ?? item.has_update,
 			isClientOnly:
 				isClientOnlyEnvironment(item.environment) ||
diff --git a/packages/ui/src/layouts/shared/content-tab/types.ts b/packages/ui/src/layouts/shared/content-tab/types.ts
index 6a208ce4a3..496c7e4278 100644
--- a/packages/ui/src/layouts/shared/content-tab/types.ts
+++ b/packages/ui/src/layouts/shared/content-tab/types.ts
@@ -56,6 +56,7 @@ export interface ContentCardTableItem {
 	toggleDisabled?: boolean
 	toggleDisabledTooltip?: string | null
 	installing?: boolean
+	installProgress?: number | null
 	hasUpdate?: boolean
 	isClientOnly?: boolean
 	clientWarning?: ClientWarningType | null
@@ -91,6 +92,7 @@ export interface ContentItem extends Omit<
 	pack_client_retained?: boolean
 	pack_client_depends?: boolean
 	installing?: boolean
+	installProgress?: number | null
 	source_kind?: ContentSourceKind | null
 	external?: boolean
 	external_url?: string
diff --git a/packages/ui/src/layouts/shared/installation-settings/composables/use-installation-form.ts b/packages/ui/src/layouts/shared/installation-settings/composables/use-installation-form.ts
index d7ee17d88e..c30f42629b 100644
--- a/packages/ui/src/layouts/shared/installation-settings/composables/use-installation-form.ts
+++ b/packages/ui/src/layouts/shared/installation-settings/composables/use-installation-form.ts
@@ -67,6 +67,7 @@ export function useInstallationForm(
 	})
 
 	const hasChanges = computed(() => {
+		if (ctx.requiresInstallation?.value) return true
 		if (selectedPlatform.value !== ctx.currentPlatform.value) return true
 		if (selectedGameVersion.value !== ctx.currentGameVersion.value) return true
 		if (
@@ -119,8 +120,12 @@ export function useInstallationForm(
 			isValid: isValid.value,
 			hasChanges: hasChanges.value,
 		})
-		if (ctx.isBusy.value) {
-			debug('save: ignored busy')
+		if (ctx.isBusy.value || !isValid.value || !hasChanges.value) {
+			debug('save: ignored', {
+				isBusy: ctx.isBusy.value,
+				isValid: isValid.value,
+				hasChanges: hasChanges.value,
+			})
 			return
 		}
 		isSaving.value = true
@@ -209,6 +214,11 @@ export function useInstallationForm(
 			selectedGameVersion: selectedGameVersion.value,
 			selectedLoaderVersion: selectedLoaderVersion.value,
 		})
+		if (!isValid.value) {
+			debug('performSave: ignored invalid form')
+			isSaving.value = false
+			return
+		}
 		try {
 			const loaderVersionId =
 				selectedPlatform.value !== 'vanilla'
diff --git a/packages/ui/src/layouts/shared/installation-settings/providers/installation-settings.ts b/packages/ui/src/layouts/shared/installation-settings/providers/installation-settings.ts
index f719d9f4cb..4401e535fd 100644
--- a/packages/ui/src/layouts/shared/installation-settings/providers/installation-settings.ts
+++ b/packages/ui/src/layouts/shared/installation-settings/providers/installation-settings.ts
@@ -24,6 +24,7 @@ export interface InstallationSettingsContext {
 	currentPlatform: ComputedRef<string>
 	currentGameVersion: ComputedRef<string>
 	currentLoaderVersion: ComputedRef<string>
+	requiresInstallation?: Ref<boolean> | ComputedRef<boolean>
 
 	availablePlatforms: string[] | ComputedRef<string[]>
 
diff --git a/packages/ui/src/layouts/shared/server-settings/pages/installation.vue b/packages/ui/src/layouts/shared/server-settings/pages/installation.vue
index 21275870a7..3960f6b2c0 100644
--- a/packages/ui/src/layouts/shared/server-settings/pages/installation.vue
+++ b/packages/ui/src/layouts/shared/server-settings/pages/installation.vue
@@ -74,7 +74,7 @@
 </template>
 
 <script setup lang="ts">
-import type { Archon } from '@modrinth/api-client'
+import type { Archon, Labrinth } from '@modrinth/api-client'
 import { RotateCounterClockwiseIcon } from '@modrinth/assets'
 import {
 	commonMessages,
@@ -105,9 +105,19 @@ import { injectFilePicker } from '#ui/providers/file-picker'
 
 const debug = useDebugLogger('LoaderPage')
 const client = injectModrinthClient()
-const { server, serverId, worldId, isSyncingContent, busyReasons } = injectModrinthServerContext()
+const {
+	beginInstallation,
+	busyReasons,
+	cancelOptimisticInstallation,
+	installation,
+	server,
+	serverId,
+	worldId,
+} = injectModrinthServerContext()
 const { addNotification } = injectNotificationManager()
 const queryClient = useQueryClient()
+const serverDetailQueryKey = ['servers', 'detail', serverId] as const
+const addonsQueryKey = ['content', 'list', 'v1', serverId] as const
 const tags = injectTags()
 const { formatMessage } = useVIntl()
 const serverSettings = injectServerSettings()
@@ -200,19 +210,7 @@ const emit = defineEmits<{
 	'reinstall-failed': []
 }>()
 
-const isInstalling = computed(() => {
-	const val =
-		server.value?.status === 'installing' || isSyncingContent.value || busyReasons.value.length > 0
-	debug(
-		'isInstalling:',
-		val,
-		'server.status:',
-		server.value?.status,
-		'isSyncingContent:',
-		isSyncingContent.value,
-	)
-	return val
-})
+const isInstalling = computed(() => busyReasons.value.length > 0)
 const setupActionDisabled = computed(() => !canSetup.value || isInstalling.value)
 const setupActionDisabledMessage = computed(() => {
 	if (!canSetup.value) return permissionDeniedMessage.value
@@ -234,19 +232,23 @@ function showResetServerModal() {
 async function invalidateServerState() {
 	debug('invalidateServerState: starting')
 	await Promise.all([
-		queryClient.invalidateQueries({ queryKey: ['servers', 'detail', serverId] }),
-		queryClient.invalidateQueries({ queryKey: ['content', 'list', 'v1', serverId] }),
+		queryClient.invalidateQueries({ queryKey: serverDetailQueryKey }),
+		queryClient.invalidateQueries({ queryKey: addonsQueryKey }),
 	])
 	debug('invalidateServerState: complete')
 }
 
 const addonsQuery = useQuery({
-	queryKey: computed(() => ['content', 'list', 'v1', serverId]),
+	queryKey: addonsQueryKey,
 	queryFn: () =>
 		client.archon.content_v1.getAddons(serverId, worldId.value!, { from_modpack: false }),
 	enabled: computed(() => worldId.value !== null),
 })
 
+const requiresInstallation = computed(
+	() => installation.value?.status === 'failed' || addonsQuery.data.value?.error != null,
+)
+
 const modpack = computed(() => addonsQuery.data.value?.modpack ?? null)
 
 const modpackProjectId = computed(() => {
@@ -282,6 +284,8 @@ function showResetToOnboardingModal() {
 }
 
 const modLoaders = ['fabric', 'forge', 'quilt', 'neoforge']
+const loaderGameVersionPlaceholder = '${modrinth.gameVersion}'
+const minecraftServerDownloadsStartTime = Date.parse('2012-04-04T00:00:00Z')
 
 function toApiLoaderName(loader: string): string {
 	return loader === 'neoforge' ? 'neo' : loader
@@ -290,10 +294,17 @@ function toApiLoaderName(loader: string): string {
 const apiLoaderName = computed(() =>
 	modLoaders.includes(editingPlatform.value) ? toApiLoaderName(editingPlatform.value) : null,
 )
+const manifestFormatVersion = computed(() => (apiLoaderName.value === 'quilt' ? 1 : 0))
 
 const manifestQuery = useQuery({
-	queryKey: computed(() => ['loader-manifest', apiLoaderName.value] as const),
-	queryFn: () => client.launchermeta.manifest_v0.getManifest(apiLoaderName.value!),
+	queryKey: computed(
+		() => ['loader-manifest', apiLoaderName.value, manifestFormatVersion.value] as const,
+	),
+	queryFn: () =>
+		client.launchermeta.manifest_v0.getManifest(
+			apiLoaderName.value!,
+			manifestFormatVersion.value,
+		),
 	enabled: computed(() => !!apiLoaderName.value),
 	staleTime: 5 * 60 * 1000,
 })
@@ -377,22 +388,101 @@ function getLoaderVersionsForGameVersion(
 	const versionGroups = manifestQuery.data.value?.versionGroups
 	if (!manifest) return []
 
-	const placeholder = manifest.find((x) => x.id === '${modrinth.gameVersion}')
-	if (placeholder) return placeholder.loaders
-
 	const entry = manifest.find((x) => x.id === gameVersion)
+	if (!entry) return []
 	if (entry?.versionGroup) {
 		return versionGroups?.find((group) => group.id === entry.versionGroup)?.loaders ?? []
 	}
 
+	const placeholder = manifest.find((x) => x.id === loaderGameVersionPlaceholder)
+	if (placeholder) return placeholder.loaders
+
 	return entry?.loaders ?? []
 }
 
+function supportsMinecraftServer(version: Labrinth.Tags.v2.GameVersion): boolean {
+	return Date.parse(version.date) >= minecraftServerDownloadsStartTime
+}
+
+function getSupportedManifestGameVersions(): Set<string> | null {
+	const manifest = manifestQuery.data.value?.gameVersions
+	if (!manifest) return null
+
+	const hasPlaceholder = manifest.some((entry) => entry.id === loaderGameVersionPlaceholder)
+	return new Set(
+		manifest
+			.filter((entry) => entry.id !== loaderGameVersionPlaceholder)
+			.filter((entry) => hasPlaceholder || entry.loaders.length > 0 || !!entry.versionGroup)
+			.map((entry) => entry.id),
+	)
+}
+
 function toApiLoader(loader: string): Archon.Content.v1.Modloader {
 	if (loader === 'neoforge') return 'neo_forge'
 	return loader as Archon.Content.v1.Modloader
 }
 
+type InstallationCacheSnapshot = {
+	server: Archon.Servers.v0.Server | undefined
+	addons: Archon.Content.v1.Addons | undefined
+}
+
+async function applyOptimisticInstallation(
+	platform: string,
+	gameVersion: string,
+	loaderVersion: string | null,
+): Promise<InstallationCacheSnapshot> {
+	await Promise.all([
+		queryClient.cancelQueries({ queryKey: serverDetailQueryKey, exact: true }),
+		queryClient.cancelQueries({ queryKey: addonsQueryKey, exact: true }),
+	])
+
+	const snapshot = {
+		server: queryClient.getQueryData<Archon.Servers.v0.Server>(serverDetailQueryKey),
+		addons: queryClient.getQueryData<Archon.Content.v1.Addons>(addonsQueryKey),
+	}
+	const resolvedLoaderVersion = platform === 'vanilla' ? null : loaderVersion
+	beginInstallation({
+		type: 'platform',
+		platform: platform as Extract<
+			Archon.Websocket.v0.InstallProgressKey,
+			{ type: 'platform' }
+		>['platform'],
+		platform_version: resolvedLoaderVersion ?? '',
+		game_version: gameVersion,
+	})
+
+	queryClient.setQueryData<Archon.Servers.v0.Server>(serverDetailQueryKey, (current) =>
+		current
+			? {
+					...current,
+					status: 'installing',
+					loader: formatLoaderLabel(platform) as Archon.Servers.v0.Loader,
+					loader_version: resolvedLoaderVersion,
+					mc_version: gameVersion,
+				}
+			: current,
+	)
+	queryClient.setQueryData<Archon.Content.v1.Addons>(addonsQueryKey, (current) =>
+		current
+			? {
+					...current,
+					modloader: toApiLoader(platform),
+					modloader_version: resolvedLoaderVersion,
+					game_version: gameVersion,
+				}
+			: current,
+	)
+
+	return snapshot
+}
+
+function rollbackOptimisticInstallation(snapshot: InstallationCacheSnapshot) {
+	cancelOptimisticInstallation()
+	queryClient.setQueryData(serverDetailQueryKey, snapshot.server)
+	queryClient.setQueryData(addonsQueryKey, snapshot.addons)
+}
+
 async function uploadLocalModpackWithSoftOverride() {
 	const picked = await filePicker.pickModpackFile()
 	if (!picked?.file) return false
@@ -404,8 +494,11 @@ async function uploadLocalModpackWithSoftOverride() {
 		{ softOverride: true },
 	)
 	await uploadProgressModal.value!.track(handle)
+	beginInstallation({
+		type: 'local_modpack',
+		filename: picked.file.name,
+	})
 	emit('reinstall')
-	await invalidateServerState()
 	return true
 }
 
@@ -477,44 +570,37 @@ provideInstallationSettings({
 	currentPlatform: computed(() => server.value?.loader?.toLowerCase() ?? 'vanilla'),
 	currentGameVersion: computed(() => server.value?.mc_version ?? ''),
 	currentLoaderVersion: computed(() => server.value?.loader_version ?? ''),
+	requiresInstallation,
 	availablePlatforms: ['vanilla', 'fabric', 'neoforge', 'forge', 'quilt', 'paper', 'purpur'],
 
 	editingPlatformRef: editingPlatform,
 	editingGameVersionRef: editingGameVersion,
 
 	resolveGameVersions(loader, showSnapshots) {
+		const serverVersions = tags.gameVersions.value.filter(supportsMinecraftServer)
 		const versions = showSnapshots
-			? tags.gameVersions.value
-			: tags.gameVersions.value.filter((v) => v.version_type === 'release')
+			? serverVersions
+			: serverVersions.filter((v) => v.version_type === 'release')
 
 		if (loader && loader !== 'vanilla') {
 			if (loader === 'paper') {
 				const supported = paperSupportedVersionsQuery.data.value
-				if (supported) {
-					return versions
-						.filter((v) => supported.has(v.version))
-						.map((v) => ({ value: v.version, label: v.version }))
-				}
+				if (!supported) return []
+				return versions
+					.filter((v) => supported.has(v.version))
+					.map((v) => ({ value: v.version, label: v.version }))
 			} else if (loader === 'purpur') {
 				const supported = purpurSupportedVersionsQuery.data.value
-				if (supported) {
-					return versions
-						.filter((v) => supported.has(v.version))
-						.map((v) => ({ value: v.version, label: v.version }))
-				}
+				if (!supported) return []
+				return versions
+					.filter((v) => supported.has(v.version))
+					.map((v) => ({ value: v.version, label: v.version }))
 			} else {
-				const manifest = manifestQuery.data.value?.gameVersions
-				if (manifest) {
-					const hasPlaceholder = manifest.some((x) => x.id === '${modrinth.gameVersion}')
-					if (!hasPlaceholder) {
-						const supportedVersions = new Set(
-							manifest.filter((x) => x.loaders.length > 0 || !!x.versionGroup).map((x) => x.id),
-						)
-						return versions
-							.filter((v) => supportedVersions.has(v.version))
-							.map((v) => ({ value: v.version, label: v.version }))
-					}
-				}
+				const supportedVersions = getSupportedManifestGameVersions()
+				if (!supportedVersions) return []
+				return versions
+					.filter((v) => supportedVersions.has(v.version))
+					.map((v) => ({ value: v.version, label: v.version }))
 			}
 		}
 
@@ -527,33 +613,27 @@ provideInstallationSettings({
 	},
 
 	resolveHasSnapshots(loader) {
+		const serverVersions = tags.gameVersions.value.filter(supportsMinecraftServer)
 		if (loader === 'vanilla') {
-			return tags.gameVersions.value.some((v) => v.version_type !== 'release')
+			return serverVersions.some((v) => v.version_type !== 'release')
 		}
 		if (loader === 'paper') {
 			const supported = paperSupportedVersionsQuery.data.value
 			if (!supported) return false
-			return tags.gameVersions.value.some(
+			return serverVersions.some(
 				(v) => v.version_type !== 'release' && supported.has(v.version),
 			)
 		}
 		if (loader === 'purpur') {
 			const supported = purpurSupportedVersionsQuery.data.value
 			if (!supported) return false
-			return tags.gameVersions.value.some(
+			return serverVersions.some(
 				(v) => v.version_type !== 'release' && supported.has(v.version),
 			)
 		}
-		const manifest = manifestQuery.data.value?.gameVersions
-		if (!manifest) return false
-		const hasPlaceholder = manifest.some((x) => x.id === '${modrinth.gameVersion}')
-		if (hasPlaceholder) {
-			return tags.gameVersions.value.some((v) => v.version_type !== 'release')
-		}
-		const supportedVersions = new Set(
-			manifest.filter((x) => x.loaders.length > 0 || !!x.versionGroup).map((x) => x.id),
-		)
-		const supported = tags.gameVersions.value.filter((v) => supportedVersions.has(v.version))
+		const supportedVersions = getSupportedManifestGameVersions()
+		if (!supportedVersions) return false
+		const supported = serverVersions.filter((v) => supportedVersions.has(v.version))
 		return supported.some((v) => v.version_type !== 'release')
 	},
 
@@ -565,6 +645,9 @@ provideInstallationSettings({
 		const gameVersionChanged = gameVersion !== (server.value?.mc_version ?? '')
 		const loaderVersionChanged =
 			loaderVersionId !== null && loaderVersionId !== (server.value?.loader_version ?? '')
+		const shouldInstallContent =
+			requiresInstallation.value || platformChanged || loaderVersionChanged
+		if (!shouldInstallContent && !gameVersionChanged) return
 
 		let resolvedLoaderVersion = loaderVersionId
 		if (!resolvedLoaderVersion && platform !== 'vanilla') {
@@ -572,32 +655,34 @@ provideInstallationSettings({
 			resolvedLoaderVersion = versions[0]?.id ?? null
 		}
 
+		const snapshot = await applyOptimisticInstallation(platform, gameVersion, resolvedLoaderVersion)
 		debug('save: emitting reinstall before API call')
 		emit(
 			'reinstall',
-			platformChanged || loaderVersionChanged
+			shouldInstallContent
 				? { loader: platform, lVersion: resolvedLoaderVersion, mVersion: gameVersion }
 				: { mVersion: gameVersion },
 		)
 		try {
-			if (platformChanged || loaderVersionChanged) {
+			if (shouldInstallContent) {
 				const request: Archon.Content.v1.InstallWorldContent = {
 					content_variant: 'bare',
 					loader: toApiLoader(platform),
 					version: resolvedLoaderVersion ?? '',
-					game_version: gameVersion || undefined,
+					game_version: gameVersion,
 					soft_override: true,
 				}
-				debug('save: platform/loader version changed, calling installContent', request)
+				debug('save: calling installContent', request)
 				await client.archon.content_v1.installContent(serverId, worldId.value!, request)
 			} else if (gameVersionChanged) {
 				debug('save: game version only, calling applyGameVersionUpdate', gameVersion)
 				await client.archon.content_v1.applyGameVersionUpdate(serverId, worldId.value!, gameVersion)
 			}
-			debug('save: succeeded, invalidating')
-			invalidateServerState()
+			debug('save: succeeded')
+			serverSettings.closeModal?.()
 		} catch (err) {
 			debug('save: failed, emitting reinstall-failed', err)
+			rollbackOptimisticInstallation(snapshot)
 			emit('reinstall-failed')
 			addNotification({
 				type: 'error',
@@ -610,10 +695,10 @@ provideInstallationSettings({
 	async repair() {
 		if (setupActionDisabled.value) return
 		debug('repair: called')
+		beginInstallation({ type: 'unknown' })
 		try {
 			await client.archon.content_v1.repair(serverId, worldId.value!)
-			debug('repair: API succeeded, invalidating')
-			await invalidateServerState()
+			debug('repair: API succeeded')
 			addNotification({
 				type: 'success',
 				title: formatMessage(messages.repairStartedTitle),
@@ -621,6 +706,7 @@ provideInstallationSettings({
 			})
 		} catch (err) {
 			debug('repair: failed', err)
+			cancelOptimisticInstallation()
 			addNotification({
 				type: 'error',
 				text: err instanceof Error ? err.message : formatMessage(messages.failedToRepair),
@@ -652,6 +738,11 @@ provideInstallationSettings({
 			modpack.value.spec.version_id,
 		)
 		debug('reinstallModpack: emitting reinstall before API call')
+		beginInstallation({
+			type: 'modrinth_modpack',
+			project_id: modpack.value.spec.project_id,
+			version_id: modpack.value.spec.version_id,
+		})
 		emit('reinstall')
 		try {
 			await client.archon.content_v1.installContent(serverId, worldId.value!, {
@@ -663,10 +754,10 @@ provideInstallationSettings({
 				},
 				soft_override: true,
 			})
-			debug('reinstallModpack: installContent succeeded, invalidating')
-			invalidateServerState()
+			debug('reinstallModpack: installContent succeeded')
 		} catch (err) {
 			debug('reinstallModpack: failed, emitting reinstall-failed', err)
+			cancelOptimisticInstallation()
 			emit('reinstall-failed')
 			addNotification({
 				type: 'error',
@@ -716,14 +807,7 @@ provideInstallationSettings({
 			})
 		} finally {
 			debug('unlinkModpack: invalidating queries')
-			await Promise.all([
-				queryClient.invalidateQueries({
-					queryKey: ['servers', 'detail', serverId],
-				}),
-				queryClient.invalidateQueries({
-					queryKey: ['content', 'list', 'v1', serverId],
-				}),
-			])
+			await invalidateServerState()
 			debug('unlinkModpack: invalidation complete')
 		}
 	},
@@ -767,6 +851,11 @@ provideInstallationSettings({
 		if (!modpackProjectId.value) return
 		debug('onModpackVersionConfirm: called, version:', version.id)
 		debug('onModpackVersionConfirm: emitting reinstall before API call')
+		beginInstallation({
+			type: 'modrinth_modpack',
+			project_id: modpackProjectId.value,
+			version_id: version.id,
+		})
 		emit('reinstall')
 		try {
 			await client.archon.content_v1.installContent(serverId, worldId.value!, {
@@ -778,10 +867,10 @@ provideInstallationSettings({
 				},
 				soft_override: true,
 			})
-			debug('onModpackVersionConfirm: installContent succeeded, invalidating')
-			invalidateServerState()
+			debug('onModpackVersionConfirm: installContent succeeded')
 		} catch (err) {
 			debug('onModpackVersionConfirm: failed, emitting reinstall-failed', err)
+			cancelOptimisticInstallation()
 			emit('reinstall-failed')
 			addNotification({
 				type: 'error',
@@ -863,6 +952,7 @@ provideInstallationSettings({
 			const versions = getLoaderVersionsForGameVersion(platform, gameVersion)
 			resolvedLoaderVersion = versions[0]?.id ?? null
 		}
+		const snapshot = await applyOptimisticInstallation(platform, gameVersion, resolvedLoaderVersion)
 		emit('reinstall', { loader: platform, lVersion: resolvedLoaderVersion, mVersion: gameVersion })
 		try {
 			const request: Archon.Content.v1.InstallWorldContent = {
@@ -874,10 +964,10 @@ provideInstallationSettings({
 			}
 			debug('saveWithoutAutoFix: calling installContent', request)
 			await client.archon.content_v1.installContent(serverId, worldId.value!, request)
-			debug('saveWithoutAutoFix: succeeded, invalidating')
-			invalidateServerState()
+			debug('saveWithoutAutoFix: succeeded')
 		} catch (err) {
 			debug('saveWithoutAutoFix: failed', err)
+			rollbackOptimisticInstallation(snapshot)
 			emit('reinstall-failed')
 			addNotification({
 				type: 'error',
@@ -928,10 +1018,28 @@ watch(
 )
 
 function onReinstall(event?: unknown) {
-	if (resetServerDisabled.value) return
+	if (resetServerDisabled.value && !installation.value) return
 	installationSettingsLayout.value?.cancelEditing()
 	modrinthServersConsole.clear()
 	queryClient.removeQueries({ queryKey: ['servers', 'ws-state', serverId] })
+	if (!installation.value) {
+		const args = event as
+			| { loader?: string; lVersion?: string; mVersion?: string | null }
+			| undefined
+		if (args?.loader && args.mVersion) {
+			beginInstallation({
+				type: 'platform',
+				platform: args.loader as Extract<
+					Archon.Websocket.v0.InstallProgressKey,
+					{ type: 'platform' }
+				>['platform'],
+				platform_version: args.lVersion ?? '',
+				game_version: args.mVersion,
+			})
+		} else {
+			beginInstallation({ type: 'unknown' })
+		}
+	}
 	emit('reinstall', event)
 	serverSettings.closeModal?.()
 }
diff --git a/packages/ui/src/layouts/wrapped/hosting/manage/content.vue b/packages/ui/src/layouts/wrapped/hosting/manage/content.vue
index bcfd4afc38..8582a43f01 100644
--- a/packages/ui/src/layouts/wrapped/hosting/manage/content.vue
+++ b/packages/ui/src/layouts/wrapped/hosting/manage/content.vue
@@ -2,14 +2,14 @@
 import { type Archon, type Labrinth, ModrinthApiError } from '@modrinth/api-client'
 import { ClipboardCopyIcon } from '@modrinth/assets'
 import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
-import { useIntervalFn } from '@vueuse/core'
-import { computed, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
+import { computed, nextTick, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 
 import ReadyTransition from '#ui/components/base/ReadyTransition.vue'
 import UnknownFileWarningModal from '#ui/components/modal/UnknownFileWarningModal.vue'
 import { useUploadSessionUpload } from '#ui/composables/hosting/kyros-session-upload'
 import { defineMessages, useVIntl } from '#ui/composables/i18n'
+import { waitForServerContextRuntimeReady } from '#ui/composables/server-context-runtime'
 import { useServerPermissions } from '#ui/composables/server-permissions'
 import {
 	injectModrinthClient,
@@ -18,20 +18,11 @@ import {
 	injectServerSettingsModal,
 } from '#ui/providers'
 import { commonMessages } from '#ui/utils/common-messages'
-import {
-	type PendingServerContentInstall,
-	pendingServerContentInstallsEvent,
-	readPendingServerContentInstallBaseline,
-	readPendingServerContentInstalls,
-	removePendingServerContentInstall,
-} from '#ui/utils/server-content-installing'
 import { versionChangesGameVersion } from '#ui/utils/version-compatibility'
 
-import type { BrowseInstallPlan } from '../../../shared/browse-tab/composables/install-logic'
 import {
 	flushStoredServerAddonInstallQueue,
 	getStoredServerAddonInstallQueue,
-	getTargetInstallPreferences,
 } from '../../../shared/browse-tab/composables/install-logic'
 import ConfirmModpackUpdateModal from '../../../shared/content-tab/components/modals/ConfirmModpackUpdateModal.vue'
 import ConfirmUnlinkModal from '../../../shared/content-tab/components/modals/ConfirmUnlinkModal.vue'
@@ -116,7 +107,7 @@ const messages = defineMessages({
 })
 
 const client = injectModrinthClient()
-const { server, worldId, busyReasons, isSyncingContent, uploadState, cancelUpload } =
+const { server, worldId, busyReasons, installProgressItems, uploadState, cancelUpload } =
 	injectModrinthServerContext()
 const contentUploadSession = useUploadSessionUpload({
 	client,
@@ -175,19 +166,11 @@ const setupActionDisabled = computed(() => !canSetup.value || busyReasons.value.
 const setupActionBusyMessage = computed(() => {
 	if (!canSetup.value) return permissionDeniedMessage.value
 
-	const bannerCoversInstalling =
-		server.value?.status === 'installing' ||
-		isSyncingContent.value ||
-		busyReasons.value.some(
-			(r) =>
-				r.reason.id === 'servers.busy.installing' || r.reason.id === 'servers.busy.syncing-content',
-		)
+	const bannerCoversInstalling = busyReasons.value.some(
+		(r) => r.reason.id === 'servers.busy.installing',
+	)
 	const filteredReasons = busyReasons.value.filter((r) => {
-		if (
-			bannerCoversInstalling &&
-			(r.reason.id === 'servers.busy.installing' || r.reason.id === 'servers.busy.syncing-content')
-		)
-			return false
+		if (bannerCoversInstalling && r.reason.id === 'servers.busy.installing') return false
 		if (
 			r.reason.id === 'servers.busy.backup-creating' ||
 			r.reason.id === 'servers.busy.backup-restoring'
@@ -198,6 +181,15 @@ const setupActionBusyMessage = computed(() => {
 	return filteredReasons.length > 0 ? formatMessage(filteredReasons[0].reason) : null
 })
 
+const currentWorldInstallProgressItems = computed(() =>
+	installProgressItems.value.filter((item) => item.world_id === worldId.value),
+)
+const contentActionDisabled = computed(() => !canSetup.value || busyReasons.value.length > 0)
+const contentActionBusyMessage = computed(() => {
+	if (!canSetup.value) return permissionDeniedMessage.value
+	return busyReasons.value.length > 0 ? formatMessage(busyReasons.value[0].reason) : null
+})
+
 const modpackProjectId = computed(() => {
 	const spec = contentQuery.data.value?.modpack?.spec
 	return spec?.platform === 'modrinth' ? spec.project_id : null
@@ -304,6 +296,8 @@ const modpack = computed<ContentModpackData | null>(() => {
 			header: 'categories',
 		})) as ContentModpackCardCategory[],
 		hasUpdate: !!mp.has_update || !!newestModpackUpdateVersion.value,
+		disabled: setupActionDisabled.value,
+		disabledText: setupActionBusyMessage.value ?? formatMessage(commonMessages.installingLabel),
 	}
 })
 
@@ -328,141 +322,62 @@ const addonLookup = computed(() => {
 	return map
 })
 
-const pendingServerContentInstalls = ref<PendingServerContentInstall[]>([])
-const lastStableContentKeys = ref<Set<string>>(new Set())
-const contentInstallBaselineKeys = ref<Set<string> | null>(null)
-const contentInstallAddedKeys = ref<Set<string>>(new Set())
-const isFlushingStoredServerInstalls = ref(false)
-const { pause: pausePendingInstallPoll, resume: resumePendingInstallPoll } = useIntervalFn(
-	() => {
-		if (pendingServerContentInstalls.value.length === 0 || contentQuery.isFetching.value) return
-		void contentQuery.refetch()
-	},
-	5000,
-	{ immediate: false },
-)
-
-function syncPendingServerContentInstalls() {
-	pendingServerContentInstalls.value = readPendingServerContentInstalls(serverId, worldId.value)
+function normalizeInstallFilename(filename: string) {
+	const normalized = filename.endsWith('.disabled')
+		? filename.slice(0, -'.disabled'.length)
+		: filename
+	return normalized.toLowerCase()
 }
 
-function handlePendingServerContentInstallsChanged(event: Event) {
-	const detail = (event as CustomEvent<{ serverId?: string | null; worldId?: string | null }>)
-		.detail
-	if (detail?.serverId !== serverId || detail?.worldId !== worldId.value) return
-	syncPendingServerContentInstalls()
-	void flushStoredServerInstalls()
+type FileInstallProgressItem = Archon.Websocket.v0.InstallProgressItem & {
+	key: Archon.Websocket.v0.InstallProgressFileKey
 }
 
-function getAddonInstallKey(addon: Archon.Content.v1.Addon) {
-	return addon.project_id ?? addon.filename
-}
+const fileInstallProgressItems = computed<FileInstallProgressItem[]>(() =>
+	currentWorldInstallProgressItems.value.filter(
+		(item): item is FileInstallProgressItem => item.key.type === 'file',
+	),
+)
 
-function getAddonInstallKeys(addons: Archon.Content.v1.Addon[]) {
-	const keys = new Set<string>()
-	for (const addon of addons) {
-		keys.add(getAddonInstallKey(addon))
-	}
-	return keys
+function getFileInstallFilenames(key: Archon.Websocket.v0.InstallProgressFileKey) {
+	return [key.source_filename, key.target_filename]
+		.filter((filename): filename is string => !!filename)
+		.map(normalizeInstallFilename)
 }
 
-function getInstalledProjectIds() {
-	return new Set(
-		(contentQuery.data.value?.addons ?? [])
-			.map((addon) => addon.project_id)
-			.filter((projectId): projectId is string => !!projectId),
-	)
+function isFileInstallActive(item: FileInstallProgressItem) {
+	return item.error == null && item.progress !== 100
 }
 
-function toResolvePreferences(
-	preferences?: BrowseInstallPlan['preferences'],
-): Labrinth.Content.v3.ResolutionPreferences {
-	return {
-		game_versions: preferences?.gameVersions,
-		loaders: preferences?.loaders,
-	}
+function getContentItemInstallFilename(item: ContentItem) {
+	const filename = item.version?.file_name || item.file_name
+	return normalizeInstallFilename(filename)
 }
 
-async function resolveStoredServerAddonPlans(plans: BrowseInstallPlan[]) {
-	const existingProjectIds = getInstalledProjectIds()
-	const resolvedAddons: Array<{ project_id: string; version_id: string }> = []
-
-	for (const plan of plans) {
-		const target = getTargetInstallPreferences(
-			{
-				gameVersion: server.value?.mc_version,
-				loader: server.value?.loader,
-			},
-			plan.contentType,
-		)
-		const resolved = await client.labrinth.content_v3.resolve({
-			project_id: plan.projectId,
-			version_id: plan.versionId,
-			content_type: plan.contentType as Labrinth.Content.v3.ContentType,
-			selected: toResolvePreferences(plan.preferences),
-			target: toResolvePreferences(target),
-			existing_project_ids: Array.from(existingProjectIds),
-		})
-
-		for (const item of [resolved.primary, ...resolved.dependencies]) {
-			if (existingProjectIds.has(item.project_id)) continue
-			existingProjectIds.add(item.project_id)
-			resolvedAddons.push({
-				project_id: item.project_id,
-				version_id: item.version_id,
-			})
-		}
-	}
-
-	return resolvedAddons
-}
+function getContentItemInstallProgress(item: ContentItem): FileInstallProgressItem | undefined {
+	const projectId = item.project?.id
+	const versionId = item.version?.id
+	const filename = getContentItemInstallFilename(item)
 
-function addonMatchesPendingInstall(
-	addon: Archon.Content.v1.Addon,
-	pendingInstall: PendingServerContentInstall,
-) {
-	return (
-		addon.project_id === pendingInstall.projectId ||
-		addon.version?.id === pendingInstall.versionId ||
-		(!!pendingInstall.fileName && addon.filename === pendingInstall.fileName)
-	)
+	return fileInstallProgressItems.value.find((progressItem) => {
+		const key = progressItem.key
+		if (key.project_id === projectId) return true
+		if (key.version_id === versionId) return true
+		return getFileInstallFilenames(key).includes(filename)
+	})
 }
 
-function removeResolvedPendingServerContentInstalls(addons: Archon.Content.v1.Addon[]) {
-	if (addons.length === 0 || pendingServerContentInstalls.value.length === 0) return
-
-	for (const pendingInstall of pendingServerContentInstalls.value) {
-		if (addons.some((addon) => addonMatchesPendingInstall(addon, pendingInstall))) {
-			removePendingServerContentInstall(serverId, worldId.value, pendingInstall.projectId)
-		}
+function decorateContentItemWithInstallProgress(
+	contentItem: ContentItem,
+	installProgress: FileInstallProgressItem,
+): ContentItem {
+	return {
+		...contentItem,
+		installProgress: isFileInstallActive(installProgress) ? installProgress.progress : undefined,
 	}
 }
 
-function syncContentInstallKeys(
-	addons: Archon.Content.v1.Addon[] = contentQuery.data.value?.addons ?? [],
-) {
-	const currentKeys = getAddonInstallKeys(addons)
-	if (isSyncingContent.value) {
-		if (!contentInstallBaselineKeys.value) {
-			contentInstallBaselineKeys.value =
-				readPendingServerContentInstallBaseline(serverId, worldId.value) ??
-				new Set(lastStableContentKeys.value)
-		}
-
-		const nextAddedKeys = new Set(contentInstallAddedKeys.value)
-		for (const key of currentKeys) {
-			if (!contentInstallBaselineKeys.value.has(key)) {
-				nextAddedKeys.add(key)
-			}
-		}
-		contentInstallAddedKeys.value = nextAddedKeys
-		return
-	}
-
-	lastStableContentKeys.value = currentKeys
-	contentInstallBaselineKeys.value = null
-	contentInstallAddedKeys.value = new Set()
-}
+const isFlushingStoredServerInstalls = ref(false)
 
 async function flushStoredServerInstalls() {
 	const wid = worldId.value
@@ -471,23 +386,35 @@ async function flushStoredServerInstalls() {
 	const queuedPlans = getStoredServerAddonInstallQueue(serverId, wid)
 	if (queuedPlans.size === 0) return
 
+	try {
+		await waitForServerContextRuntimeReady(client, serverId)
+	} catch (error) {
+		addNotification({
+			type: 'error',
+			title: formatMessage(messages.failedToInstallContent),
+			text: error instanceof Error ? error.message : undefined,
+		})
+		return
+	}
+
 	isFlushingStoredServerInstalls.value = true
 	try {
 		const result = await flushStoredServerAddonInstallQueue({
 			serverId,
 			worldId: wid,
 			install: async (plans) => {
-				const addons = await resolveStoredServerAddonPlans(plans)
-				if (addons.length > 0) {
-					await client.archon.content_v1.addAddons(serverId, wid, addons)
-				}
+				await client.archon.content_v1.addAddons(
+					serverId,
+					wid,
+					plans.map((plan) => ({
+						project_id: plan.projectId,
+						version_id: plan.versionId,
+					})),
+				)
 			},
 		})
 
 		if (!result.ok) {
-			for (const plan of result.attemptedPlans) {
-				removePendingServerContentInstall(serverId, wid, plan.projectId)
-			}
 			addNotification({
 				type: 'error',
 				title: formatMessage(messages.failedToInstallContent),
@@ -501,222 +428,39 @@ async function flushStoredServerInstalls() {
 		}
 	} finally {
 		isFlushingStoredServerInstalls.value = false
-		syncPendingServerContentInstalls()
-	}
-}
-
-function pendingInstallToContentItem(item: PendingServerContentInstall): ContentItem {
-	return {
-		project: {
-			id: item.projectId,
-			slug: item.slug ?? item.projectId,
-			title: item.title,
-			icon_url: item.iconUrl ?? undefined,
-		},
-		version: {
-			id: item.versionId,
-			version_number:
-				item.versionName ?? item.versionNumber ?? formatMessage(commonMessages.installingLabel),
-			file_name: item.fileName ?? formatMessage(commonMessages.installingLabel),
-		},
-		owner: item.owner
-			? {
-					id: item.owner.id,
-					name: item.owner.name,
-					type: item.owner.type,
-					avatar_url: getContentOwnerAvatarUrl(item.owner),
-					link: item.owner.link,
-				}
-			: undefined,
-		id: `installing:${item.projectId}`,
-		enabled: true,
-		file_name: `installing:${item.projectId}`,
-		project_type: item.contentType,
-		has_update: false,
-		update_version_id: null,
-		installing: true,
 	}
 }
 
-const rawContentItems = computed<ContentItem[]>(() => {
-	const addons = contentQuery.data.value?.addons ?? []
-	const pendingProjectIds = new Set(
-		pendingServerContentInstalls.value.map((item) => item.projectId),
-	)
-	const pendingInstallByProjectId = new Map(
-		pendingServerContentInstalls.value.map((item) => [item.projectId, item]),
-	)
-	const pendingInstallByVersionId = new Map(
-		pendingServerContentInstalls.value.map((item) => [item.versionId, item]),
-	)
-	const pendingInstallByFileName = new Map<string, PendingServerContentInstall>()
-	for (const item of pendingServerContentInstalls.value) {
-		if (item.fileName) {
-			pendingInstallByFileName.set(item.fileName, item)
-		}
-	}
-	const installingContentKeys = new Set([...pendingProjectIds, ...contentInstallAddedKeys.value])
-	const resolvedPendingProjectIds = new Set(
-		pendingServerContentInstalls.value
-			.filter((item) => addons.some((addon) => addonMatchesPendingInstall(addon, item)))
-			.map((item) => item.projectId),
-	)
-	const pendingItems = pendingServerContentInstalls.value
-		.filter((item) => !resolvedPendingProjectIds.has(item.projectId))
-		.map(pendingInstallToContentItem)
-	const addonItems = addons.map((addon) => {
+const contentItems = computed<ContentItem[]>(() =>
+	(contentQuery.data.value?.addons ?? []).map((addon) => {
 		const contentItem = addonToContentItem(addon)
-		const pendingItem =
-			(addon.project_id ? pendingInstallByProjectId.get(addon.project_id) : null) ??
-			(addon.version?.id ? pendingInstallByVersionId.get(addon.version.id) : null) ??
-			pendingInstallByFileName.get(addon.filename) ??
-			null
-		const installing = !!pendingItem || installingContentKeys.has(getAddonInstallKey(addon))
-
-		if (!installing || !pendingItem) {
-			return {
-				...contentItem,
-				installing,
-			}
-		}
-
-		const pendingContentItem = pendingInstallToContentItem(pendingItem)
-		return {
-			...contentItem,
-			project: {
-				...contentItem.project,
-				slug: pendingContentItem.project.slug,
-				title: pendingContentItem.project.title,
-				icon_url: contentItem.project.icon_url ?? pendingContentItem.project.icon_url,
-			},
-			version: {
-				id: pendingContentItem.version?.id ?? contentItem.version?.id ?? contentItem.file_name,
-				version_number:
-					pendingContentItem.version?.version_number ??
-					contentItem.version?.version_number ??
-					formatMessage(commonMessages.installingLabel),
-				file_name:
-					pendingContentItem.version?.file_name ??
-					contentItem.version?.file_name ??
-					contentItem.file_name,
-			},
-			owner: pendingContentItem.owner ?? contentItem.owner,
-			installing,
-		}
-	})
+		if (!contentItem.installing) return contentItem
 
-	return [...addonItems, ...pendingItems]
-})
-
-const displayedContentItems = ref<ContentItem[]>([])
-const contentItems = computed<ContentItem[]>(() => displayedContentItems.value)
+		const installProgress = getContentItemInstallProgress(contentItem)
+		return installProgress
+			? decorateContentItemWithInstallProgress(contentItem, installProgress)
+			: contentItem
+	}),
+)
 const contentReadyPending = computed(
 	() =>
 		contentQuery.isLoading.value &&
 		contentQuery.data.value === undefined &&
-		pendingServerContentInstalls.value.length === 0 &&
-		displayedContentItems.value.length === 0,
+		contentItems.value.length === 0,
 )
 
-function getContentItemDisplayKey(item: ContentItem) {
-	return item.project?.id ?? item.file_name ?? item.id
-}
-
 function getContentItemId(item: ContentItem) {
 	return item.file_name ?? item.id
 }
 
-function mergeFragileContentItems(items: ContentItem[]) {
-	const nextItems = new Map(items.map((item) => [getContentItemDisplayKey(item), item]))
-	const mergedItems = displayedContentItems.value.map((item) => {
-		const key = getContentItemDisplayKey(item)
-		const nextItem = nextItems.get(key)
-		if (!nextItem) return item
-
-		nextItems.delete(key)
-		return nextItem
-	})
-
-	return [...mergedItems, ...nextItems.values()]
-}
-
-watch(
-	[
-		rawContentItems,
-		isSyncingContent,
-		() => contentQuery.isFetching.value,
-		() => contentQuery.isLoading.value,
-	],
-	([items, syncing, isFetching, isLoading]) => {
-		if (syncing) {
-			if (items.length > 0) {
-				displayedContentItems.value = mergeFragileContentItems(items)
-			}
-			return
-		}
-
-		if (items.length > 0 || (!isFetching && !isLoading)) {
-			displayedContentItems.value = items
-		}
-	},
-	{ deep: true, immediate: true },
-)
-
-watch(
-	[isSyncingContent, () => contentQuery.data.value?.addons],
-	([, addons]) => {
-		syncContentInstallKeys(addons ?? [])
-	},
-	{ deep: true, immediate: true },
-)
-
-watch(
-	[() => contentQuery.data.value?.addons, pendingServerContentInstalls],
-	([addons]) => {
-		removeResolvedPendingServerContentInstalls(addons ?? [])
-	},
-	{ deep: true, immediate: true },
-)
-
-watch(
-	() => pendingServerContentInstalls.value.length > 0,
-	(hasPendingInstalls) => {
-		if (hasPendingInstalls) {
-			resumePendingInstallPoll()
-		} else {
-			pausePendingInstallPoll()
-		}
-	},
-	{ immediate: true },
-)
-
 watch(
 	worldId,
 	() => {
-		syncPendingServerContentInstalls()
-		syncContentInstallKeys()
 		void flushStoredServerInstalls()
 	},
 	{ immediate: true },
 )
 
-onMounted(() => {
-	syncPendingServerContentInstalls()
-	void flushStoredServerInstalls()
-	window.addEventListener(
-		pendingServerContentInstallsEvent,
-		handlePendingServerContentInstallsChanged,
-	)
-})
-
-onUnmounted(() => {
-	pausePendingInstallPoll()
-	window.removeEventListener(
-		pendingServerContentInstallsEvent,
-		handlePendingServerContentInstallsChanged,
-	)
-})
-
 const deleteMutation = useMutation({
 	mutationFn: ({ addon }: { addon: Archon.Content.v1.Addon }) =>
 		client.archon.content_v1.deleteAddon(serverId, worldId.value!, {
@@ -784,14 +528,14 @@ const toggleMutation = useMutation({
 })
 
 async function handleToggleEnabled(item: ContentItem) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const addon = addonLookup.value.get(item.file_name)
 	if (!addon) return
 	await toggleMutation.mutateAsync({ addon })
 }
 
 async function handleDeleteItem(item: ContentItem) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const addon = addonLookup.value.get(item.file_name)
 	if (!addon) return
 	await deleteMutation.mutateAsync({ addon })
@@ -799,6 +543,7 @@ async function handleDeleteItem(item: ContentItem) {
 
 function itemsToAddonRequests(items: ContentItem[]): Archon.Content.v1.RemoveAddonRequest[] {
 	return items.flatMap((item) => {
+		if (item.installing) return []
 		const addon = addonLookup.value.get(item.file_name)
 		if (!addon) return []
 		return [{ filename: addon.filename, kind: addon.kind }]
@@ -806,7 +551,7 @@ function itemsToAddonRequests(items: ContentItem[]): Archon.Content.v1.RemoveAdd
 }
 
 async function handleBulkDelete(items: ContentItem[]) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const requests = itemsToAddonRequests(items)
 	if (requests.length === 0) return
 	try {
@@ -822,7 +567,7 @@ async function handleBulkDelete(items: ContentItem[]) {
 }
 
 async function handleBulkEnable(items: ContentItem[]) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const requests = itemsToAddonRequests(items)
 	if (requests.length === 0) return
 	try {
@@ -838,7 +583,7 @@ async function handleBulkEnable(items: ContentItem[]) {
 }
 
 async function handleBulkDisable(items: ContentItem[]) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const requests = itemsToAddonRequests(items)
 	if (requests.length === 0) return
 	try {
@@ -907,7 +652,7 @@ const currentLoader = computed(
 )
 
 function handleBrowseContent() {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const contentType = type.value
 	if (browseServerContent && ['mod', 'plugin', 'datapack'].includes(contentType)) {
 		browseServerContent({
@@ -925,7 +670,7 @@ function handleBrowseContent() {
 }
 
 function handleUploadFiles() {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const input = document.createElement('input')
 	input.type = 'file'
 	input.multiple = true
@@ -1026,13 +771,14 @@ function addonToContentItem(addon: AddonWithUiState): ContentItem {
 		id: addon.id ?? addon.filename,
 		enabled: !addon.disabled,
 		file_name: addon.filename,
+		date_added: addon.btime,
 		project_type: addon.kind,
 		has_update: !!addon.has_update,
 		update_version_id: addon.has_update,
 		environment: addon.version?.environment ?? undefined,
 		pack_client_retained: addon.pack_client_retained,
 		pack_client_depends: addon.pack_client_depends,
-		installing: addon.installing,
+		installing: addon.installing ?? addon.status === 'pending',
 	}
 }
 
@@ -1065,7 +811,7 @@ async function handleViewModpackContent() {
 }
 
 async function handleModpackContentToggle(item: ContentItem) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const addon = addonLookup.value.get(item.file_name)
 	if (!addon) return
 	modpackContentModal.value?.updateItem(item.file_name, { disabled: true })
@@ -1096,7 +842,7 @@ async function handleModpackContentToggle(item: ContentItem) {
 }
 
 async function handleModpackBulkToggle(items: ContentItem[], enable: boolean) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const requests = itemsToAddonRequests(items)
 	if (requests.length === 0) return
 
@@ -1163,9 +909,9 @@ async function handleModpackUnlinkConfirm() {
 }
 
 async function handleBulkUpdate(items: ContentItem[]) {
-	if (setupActionDisabled.value) return
+	if (contentActionDisabled.value) return
 	const addons = items
-		.filter((item) => item.has_update)
+		.filter((item) => item.has_update && !item.installing)
 		.map((item) => ({
 			filename: item.file_name,
 			version_id: item.update_version_id ?? undefined,
@@ -1209,6 +955,7 @@ async function handleSwitchVersion(item: ContentItem) {
 }
 
 async function handleModpackUpdate() {
+	if (setupActionDisabled.value) return
 	const mp = contentQuery.data.value?.modpack
 	if (!mp || mp.spec.platform !== 'modrinth') return
 
@@ -1263,8 +1010,8 @@ function resetUpdateState() {
 }
 
 function handleModalUpdate(selectedVersion: Labrinth.Versions.v2.Version, event?: MouseEvent) {
-	if (setupActionDisabled.value) return
 	if (updatingModpack.value) {
+		if (setupActionDisabled.value) return
 		pendingModpackUpdateVersion.value = selectedVersion
 
 		const mpSpec = contentQuery.data.value?.modpack?.spec
@@ -1285,6 +1032,7 @@ function handleModalUpdate(selectedVersion: Labrinth.Versions.v2.Version, event?
 		return
 	}
 
+	if (contentActionDisabled.value) return
 	performUpdate(selectedVersion)
 }
 
@@ -1301,7 +1049,11 @@ function setAddonInstalling(filename: string, installing: boolean) {
 }
 
 async function performUpdate(selectedVersion: Labrinth.Versions.v2.Version) {
-	if (setupActionDisabled.value) return
+	if (
+		(updatingModpack.value && setupActionDisabled.value) ||
+		(!updatingModpack.value && contentActionDisabled.value)
+	)
+		return
 	const item = updatingProject.value
 	if (item) {
 		setAddonInstalling(item.file_name, true)
@@ -1380,8 +1132,8 @@ provideContentManager({
 	error: computed(() => contentQuery.error.value ?? null),
 	modpack,
 	isPackLocked: ref(false),
-	isBusy: setupActionDisabled,
-	busyMessage: setupActionBusyMessage,
+	isBusy: contentActionDisabled,
+	busyMessage: contentActionBusyMessage,
 	disableAddContent: computed(() => !canSetup.value),
 	disableAddContentTooltip: permissionDeniedMessage.value,
 	contentTypeLabel: type,
@@ -1453,8 +1205,8 @@ provideContentManager({
 					:modpack-name="modpack?.project.title"
 					:modpack-icon-url="modpack?.project.icon_url"
 					enable-toggle
-					:action-disabled="setupActionDisabled"
-					:action-disabled-tooltip="setupActionBusyMessage ?? undefined"
+					:action-disabled="contentActionDisabled"
+					:action-disabled-tooltip="contentActionBusyMessage ?? undefined"
 					@update:enabled="handleModpackContentToggle"
 					@bulk:enable="handleModpackBulkToggle($event, true)"
 					@bulk:disable="handleModpackBulkToggle($event, false)"
@@ -1485,8 +1237,10 @@ provideContentManager({
 					"
 					:loading="loadingVersions"
 					:loading-changelog="loadingChangelog"
-					:action-disabled="setupActionDisabled"
-					:action-disabled-tooltip="setupActionBusyMessage ?? undefined"
+					:action-disabled="updatingModpack ? setupActionDisabled : contentActionDisabled"
+					:action-disabled-tooltip="
+						(updatingModpack ? setupActionBusyMessage : contentActionBusyMessage) ?? undefined
+					"
 					@update="handleModalUpdate"
 					@cancel="resetUpdateState"
 					@version-select="handleVersionSelect"
diff --git a/packages/ui/src/layouts/wrapped/hosting/manage/root.vue b/packages/ui/src/layouts/wrapped/hosting/manage/root.vue
index 978b6b6c49..340265f7ff 100644
--- a/packages/ui/src/layouts/wrapped/hosting/manage/root.vue
+++ b/packages/ui/src/layouts/wrapped/hosting/manage/root.vue
@@ -173,7 +173,7 @@
 
 					<template #actions>
 						<PageHeaderActions>
-							<PanelServerActionButton :disabled="!!installError" />
+							<PanelServerActionButton />
 							<Tooltip
 								theme="dismissable-prompt"
 								:triggers="[]"
@@ -217,7 +217,6 @@
 								size="xl"
 								label="More server options"
 								:options="serverMenuOptions"
-								:disabled="!!installError"
 							>
 								<MoreVerticalIcon aria-hidden="true" />
 							</TeleportOverflowMenu>
@@ -244,92 +243,6 @@
 					:class="containedLayout ? 'flex min-h-0 flex-col overflow-hidden' : 'h-full'"
 					:style="{ '--si': 2 }"
 				>
-					<div
-						v-if="installError"
-						class="mx-auto mb-4 flex justify-between gap-2 rounded-2xl border-2 border-solid border-red bg-bg-red p-4 font-semibold text-contrast"
-					>
-						<div class="flex flex-row gap-4">
-							<IssuesIcon class="hidden h-8 w-8 shrink-0 text-red sm:block" />
-							<div class="flex flex-col gap-2 leading-[150%]">
-								<div class="flex items-center gap-3">
-									<IssuesIcon class="flex h-8 w-8 shrink-0 text-red sm:hidden" />
-									<div class="flex gap-2 text-2xl font-bold">{{ errorTitle }}</div>
-								</div>
-
-								<div
-									v-if="errorTitle.toLocaleLowerCase() === 'installation error'"
-									class="font-normal"
-								>
-									<div
-										v-if="
-											errorMessage.toLocaleLowerCase() === 'the specified version may be incorrect'
-										"
-									>
-										An invalid loader or Minecraft version was specified and could not be installed.
-										<ul class="m-0 mt-4 p-0 pl-4">
-											<li>
-												If this version of Minecraft was released recently, please check if Modrinth
-												Hosting supports it.
-											</li>
-											<li>
-												If you've installed a modpack, it may have been packaged incorrectly or may
-												not be compatible with the loader.
-											</li>
-											<li>
-												Your server may need to be reinstalled with a valid mod loader and version.
-												You can change the loader by clicking the "Change Loader" button.
-											</li>
-											<li>
-												If you're stuck, please contact Modrinth Support with the information below:
-											</li>
-										</ul>
-										<Button class="mt-2" @click="copyServerDebugInfo">
-											<CopyIcon v-if="!copied" />
-											<CheckIcon v-else />
-											Copy Debug Info
-										</Button>
-									</div>
-									<div v-if="errorMessage.toLocaleLowerCase() === 'internal error'">
-										An internal error occurred while installing your server. Don't fret — try
-										reinstalling your server, and if the problem persists, please contact Modrinth
-										support with your server's debug information.
-									</div>
-									<div
-										v-if="errorMessage.toLocaleLowerCase() === 'this version is not yet supported'"
-									>
-										An error occurred while installing your server because Modrinth Hosting does not
-										support the version of Minecraft or the loader you specified. Try reinstalling
-										your server with a different version or loader, and if the problem persists,
-										please contact Modrinth Support with your server's debug information.
-									</div>
-
-									<div
-										v-if="errorTitle === 'Installation error'"
-										class="mt-2 flex flex-col gap-4 sm:flex-row"
-									>
-										<Button v-if="errorLog" @click="openInstallLog"
-											><FileIcon />Open Installation Log</Button
-										>
-										<Button @click="copyServerDebugInfo">
-											<CopyIcon v-if="!copied" />
-											<CheckIcon v-else />
-											Copy Debug Info
-										</Button>
-										<Button
-											type="colored"
-											color="red"
-											class="whitespace-pre"
-											@click="openServerSettingsModal('installation')"
-										>
-											<RightArrowIcon />
-											Change Loader
-										</Button>
-									</div>
-								</div>
-							</div>
-						</div>
-					</div>
-
 					<div v-if="serverData.is_medal" class="mb-4">
 						<MedalServerCountdown
 							:server-id="serverId"
@@ -359,9 +272,7 @@
 
 					<ServerPanelAdmonitions
 						class="mb-4 shrink-0"
-						:sync-progress="syncProgress"
-						:content-error="contentError"
-						@content-retry="handleContentRetry"
+						@installation-retry="handleInstallationRetry"
 					/>
 					<slot :on-reinstall="onReinstall" :on-reinstall-failed="onReinstallFailed" />
 				</div>
@@ -394,13 +305,11 @@
 
 <script setup lang="ts">
 import type { Archon, Labrinth } from '@modrinth/api-client'
-import { getNodeWebSocketUrl, ModrinthApiError, NuxtModrinthClient } from '@modrinth/api-client'
+import { ModrinthApiError, NuxtModrinthClient } from '@modrinth/api-client'
 import {
 	BoxesIcon,
-	CheckIcon,
 	CopyIcon,
 	DatabaseBackupIcon,
-	FileIcon,
 	FolderOpenIcon,
 	IssuesIcon,
 	LayoutTemplateIcon,
@@ -408,7 +317,6 @@ import {
 	LoaderCircleIcon,
 	LockIcon,
 	MoreVerticalIcon,
-	RightArrowIcon,
 	ServerIcon as ServerAssetIcon,
 	SettingsIcon,
 	TimerIcon,
@@ -418,14 +326,14 @@ import {
 	XIcon,
 } from '@modrinth/assets'
 import { useQuery, useQueryClient } from '@tanstack/vue-query'
-import { useStorage, useTimeoutFn } from '@vueuse/core'
+import { useStorage } from '@vueuse/core'
 import DOMPurify from 'dompurify'
 import { Tooltip } from 'floating-vue'
 import { computed, nextTick, onBeforeUnmount, onMounted, onUnmounted, ref, watch } from 'vue'
 import { onBeforeRouteLeave, useRoute, useRouter } from 'vue-router'
 
 import Avatar from '#ui/components/base/Avatar.vue'
-import { Button, IconButton, TeleportOverflowMenu } from '#ui/components/base/buttons'
+import { IconButton, TeleportOverflowMenu } from '#ui/components/base/buttons'
 import ErrorInformationCard from '#ui/components/base/ErrorInformationCard.vue'
 import NavTabs from '#ui/components/base/NavTabs.vue'
 import PageHeader from '#ui/components/base/page-header/index.vue'
@@ -451,6 +359,10 @@ import {
 } from '#ui/composables'
 import { defineMessages, useVIntl } from '#ui/composables/i18n'
 import { useServerBackupsQueue } from '#ui/composables/server-backups-queue'
+import type {
+	ServerInstallationKey,
+	ServerInstallationState,
+} from '#ui/composables/server-installation-tracker'
 import { useServerManageCoreRuntime } from '#ui/composables/server-manage-core-runtime'
 import { useServerPanelSync } from '#ui/composables/server-panel-sync'
 import type { LogLine } from '#ui/layouts/shared/console'
@@ -463,11 +375,6 @@ import {
 import type { ServerStats } from '#ui/providers/server-context'
 import { commonMessages } from '#ui/utils/common-messages'
 import { formatLoaderLabel } from '#ui/utils/loaders'
-import {
-	pendingServerContentInstallsEvent,
-	readPendingServerContentInstalls,
-	writePendingServerContentInstalls,
-} from '#ui/utils/server-content-installing'
 
 import ServerOnboardingPanelPage from './[id]/onboarding.vue'
 
@@ -568,12 +475,6 @@ const debug = useDebugLogger('ServerManage')
 const isReconnecting = ref(false)
 const isLoading = ref(true)
 const isMounted = ref(true)
-const copied = ref(false)
-const installError = ref<Error | null>(null)
-const errorTitle = ref('Error')
-const errorMessage = ref('An unexpected error occurred.')
-const errorLog = ref('')
-const errorLogFile = ref('')
 const isOnboarding = computed(() => serverData.value?.flows?.intro)
 
 const SETTINGS_HINT_KEY = 'server-panel-settings-hint-dismissed'
@@ -627,6 +528,13 @@ const worldId = computed(() => {
 	return activeWorld?.id ?? serverFull.value.worlds[0]?.id ?? null
 })
 
+const { data: serverContent } = useQuery({
+	queryKey: ['content', 'list', 'v1', props.serverId],
+	queryFn: () =>
+		client.archon.content_v1.getAddons(props.serverId, worldId.value!, { from_modpack: false }),
+	enabled: computed(() => worldId.value !== null),
+})
+
 const { handleWsBackupProgress, busyReasons: backupsBusy } = useServerBackupsQueue(
 	computed(() => props.serverId),
 	worldId,
@@ -643,101 +551,25 @@ const { image: serverImage } = useServerImage(
 )
 const { data: serverProject } = useServerProject(computed(() => serverData.value?.upstream ?? null))
 
-const syncProgress = ref<Archon.Websocket.v0.SyncContentProgress | null>(null)
-const contentError = ref<Archon.Websocket.v0.SyncContentError | null>(null)
-const syncProgressActive = ref(false)
-const hasPendingServerContentInstalls = ref(false)
-const hasSeenPendingServerContentSync = ref(false)
-const isAwaitingPostInstallRefresh = ref(false)
-const { start: startSyncHide, stop: cancelSyncHide } = useTimeoutFn(
-	() => (syncProgressActive.value = false),
-	1000,
-	{ immediate: false },
-)
-
-watch(syncProgress, (progress) => {
-	if (progress != null) {
-		cancelSyncHide()
-		syncProgressActive.value = true
-		if (progress.phase !== 'Analyzing' && hasPendingServerContentInstalls.value) {
-			hasSeenPendingServerContentSync.value = true
-		}
-	} else if (syncProgressActive.value) {
-		startSyncHide()
-		if (hasSeenPendingServerContentSync.value) {
-			writePendingServerContentInstalls(props.serverId, worldId.value, [])
-			hasSeenPendingServerContentSync.value = false
-		}
-	}
-})
-
-watch(contentError, (error) => {
-	if (!error || !hasPendingServerContentInstalls.value) return
-	writePendingServerContentInstalls(props.serverId, worldId.value, [])
-	hasSeenPendingServerContentSync.value = false
-})
-
-const isSyncingContent = computed(
-	() =>
-		syncProgressActive.value ||
-		isAwaitingPostInstallRefresh.value ||
-		hasPendingServerContentInstalls.value,
-)
-
-function syncPendingServerContentInstalls() {
-	hasPendingServerContentInstalls.value =
-		readPendingServerContentInstalls(props.serverId, worldId.value).length > 0
-}
-
-function handlePendingServerContentInstallsChanged(event: Event) {
-	const detail = (event as CustomEvent<{ serverId?: string | null; worldId?: string | null }>)
-		.detail
-	if (detail?.serverId !== props.serverId || detail?.worldId !== worldId.value) return
-	syncPendingServerContentInstalls()
-}
-
-watch(worldId, syncPendingServerContentInstalls, { immediate: true })
-
-let hasSeenInstallProgress = false
-
 const onStateEvent = (data: Archon.Websocket.v0.WSStateEvent) => {
 	debug('[root.vue] handleState received:', {
 		power_variant: data.power_variant,
-		progress: data.progress,
 		serverStatus: serverData.value?.status,
 	})
 	hasReceivedWsData.value = true
-	syncProgress.value = data.progress
-	contentError.value = data.content_error
-
-	if (serverData.value) {
-		if (data.progress != null && serverData.value.status !== 'installing') {
-			debug('[root.vue] handleState: progress != null, setting status to installing')
-			hasSeenInstallProgress = true
-			updateServerData({ status: 'installing' })
-		} else if (data.progress != null) {
-			hasSeenInstallProgress = true
-		} else if (
-			data.progress == null &&
-			data.content_error == null &&
-			serverData.value.status === 'installing' &&
-			hasSeenInstallProgress
-		) {
-			debug('[root.vue] handleState: progress null + was installing, applying optimistic update')
-			hasSeenInstallProgress = false
-			applyOptimisticCompletion()
-			invalidateAfterInstall()
-		}
-	}
 }
 
 const {
+	beginInstallation,
 	cancelUpload,
+	cancelOptimisticInstallation,
 	cleanupCoreRuntime,
 	connectSocket,
 	cpuData,
+	dismissInstallation,
 	fsOps,
 	fsQueuedOps,
+	installation,
 	isConnected,
 	ramData,
 	serverPowerState,
@@ -749,7 +581,7 @@ const {
 	worldId,
 	server: serverData,
 	serverFull,
-	isSyncingContent,
+	content: serverContent,
 	extraBusyReasons: backupsBusy,
 	setDisconnectedOnAuthIncorrect: false,
 	syncUptimeFromState: true,
@@ -1080,7 +912,7 @@ function loadTallyScript() {
 	document.head.appendChild(script)
 }
 
-async function handleContentRetry() {
+async function handleInstallationRetry() {
 	if (!worldId.value) return
 	if (!canSetup.value) {
 		addNotification({
@@ -1089,9 +921,16 @@ async function handleContentRetry() {
 		})
 		return
 	}
+	const failedInstallationId =
+		installation.value?.status === 'failed' ? installation.value.id : null
+	if (failedInstallationId) dismissInstallation(failedInstallationId)
+	beginInstallation({ type: 'unknown' })
+	updateServerData({ status: 'installing' })
 	try {
 		await client.archon.content_v1.repair(props.serverId, worldId.value)
 	} catch (err) {
+		cancelOptimisticInstallation()
+		updateServerData({ status: 'available' })
 		addNotification({
 			type: 'error',
 			text: err instanceof Error ? err.message : 'Failed to retry installation',
@@ -1128,54 +967,56 @@ const handleNewMod = () => {
 	queryClient.invalidateQueries({ queryKey: ['content', 'list'] })
 }
 
-const handleInstallationResult = async (data: Archon.Websocket.v0.WSInstallationResultEvent) => {
-	debug('[root.vue] handleInstallationResult received:', data)
-	switch (data.result) {
-		case 'ok': {
-			debug('[root.vue] handleInstallationResult: ok received')
-			if (!serverData.value) break
+type InstallationServerSnapshot = Pick<
+	Archon.Servers.v0.Server,
+	'loader' | 'loader_version' | 'mc_version'
+>
 
-			applyOptimisticCompletion()
-			installError.value = null
-			invalidateAfterInstall()
+let installationServerSnapshot: InstallationServerSnapshot | null = null
 
-			break
-		}
-		case 'err': {
-			console.log('failed to install')
-			console.log(data)
-			errorTitle.value = 'Installation error'
-			errorMessage.value = data.reason ?? 'Unknown error'
-			installError.value = new Error(data.reason ?? 'Unknown error')
-
-			try {
-				let files = await client.kyros.files_v0.listDirectory('/', 1, 100)
-				if (files && files.total > 1) {
-					for (let i = 2; i <= files.total; i++) {
-						const nextFiles = await client.kyros.files_v0.listDirectory('/', i, 100)
-						if (nextFiles?.items?.length === 0) break
-						if (nextFiles) files = nextFiles
-					}
-				}
-				const fileName = files?.items?.find((file) =>
-					file.name.startsWith('modrinth-installation'),
-				)?.name
-				errorLogFile.value = fileName ?? ''
-				if (fileName) {
-					const content = await client.kyros.files_v0.downloadFile(fileName)
-					errorLog.value = await content.text()
-				}
-			} catch (err) {
-				console.error('Failed to fetch installation log:', err)
-			}
-			break
+function applyInstallationTarget(current: ServerInstallationState) {
+	if (!serverData.value) return
+
+	if (!installationServerSnapshot) {
+		installationServerSnapshot = {
+			loader: serverData.value.loader,
+			loader_version: serverData.value.loader_version,
+			mc_version: serverData.value.mc_version,
 		}
 	}
+
+	const patch: Partial<Archon.Servers.v0.Server> = { status: 'installing' }
+	if (current.key.type === 'platform') {
+		patch.loader = formatLoaderLabel(current.key.platform) as Archon.Servers.v0.Loader
+		patch.loader_version = current.key.platform === 'vanilla' ? null : current.key.platform_version
+		patch.mc_version = current.key.game_version
+	}
+
+	if (
+		serverData.value.status === patch.status &&
+		(current.key.type !== 'platform' ||
+			(serverData.value.loader === patch.loader &&
+				serverData.value.loader_version === patch.loader_version &&
+				serverData.value.mc_version === patch.mc_version))
+	) {
+		return
+	}
+
+	void queryClient.cancelQueries({
+		queryKey: ['servers', 'detail', props.serverId],
+		exact: true,
+	})
+	updateServerData(patch)
 }
 
-const newLoader = ref<string | null>(null)
-const newLoaderVersion = ref<string | null>(null)
-const newMCVersion = ref<string | null>(null)
+function restoreInstallationServerSnapshot() {
+	const snapshot = installationServerSnapshot
+	updateServerData({
+		...(snapshot ?? {}),
+		status: 'available',
+	})
+	installationServerSnapshot = null
+}
 
 const onReinstall = async (
 	potentialArgs: { loader?: string; lVersion?: string; mVersion?: string } | undefined,
@@ -1189,70 +1030,63 @@ const onReinstall = async (
 
 	if (!serverData.value) return
 
-	debug('[root.vue] onReinstall: setting serverData.status to installing')
-	hasSeenInstallProgress = false
-	updateServerData({ status: 'installing' })
-
-	if (potentialArgs?.loader) {
-		newLoader.value = potentialArgs.loader
-	}
-	if (potentialArgs?.lVersion) {
-		newLoaderVersion.value = potentialArgs.lVersion
-	}
-	if (potentialArgs?.mVersion) {
-		newMCVersion.value = potentialArgs.mVersion
+	if (
+		!installation.value ||
+		installation.value.status === 'complete' ||
+		installation.value.status === 'failed'
+	) {
+		if (potentialArgs?.loader && potentialArgs.mVersion) {
+			beginInstallation({
+				type: 'platform',
+				platform: potentialArgs.loader as Extract<
+					Archon.Websocket.v0.InstallProgressKey,
+					{ type: 'platform' }
+				>['platform'],
+				platform_version: potentialArgs.lVersion ?? '',
+				game_version: potentialArgs.mVersion,
+			})
+		} else {
+			beginInstallation({ type: 'unknown' })
+		}
 	}
 
-	installError.value = null
-	errorTitle.value = 'Error'
-	errorMessage.value = 'An unexpected error occurred.'
-
 	modrinthServersConsole.clear()
-
-	debug('[root.vue] onReinstall: triggering immediate invalidation')
-	queryClient.invalidateQueries({ queryKey: ['servers', 'detail', props.serverId] })
-	queryClient.invalidateQueries({ queryKey: ['content', 'list'] })
 }
 
 const onReinstallFailed = () => {
 	debug('[root.vue] onReinstallFailed: reverting status to available')
-	updateServerData({ status: 'available' })
-	newLoader.value = null
-	newLoaderVersion.value = null
-	newMCVersion.value = null
+	cancelOptimisticInstallation()
+	restoreInstallationServerSnapshot()
 }
 
-function applyOptimisticCompletion() {
+function applyInstallationCompletion(key: ServerInstallationKey) {
+	const platformKey = key?.type === 'platform' ? key : null
 	const patch: Partial<Archon.Servers.v0.Server> = { status: 'available' }
-	if (newLoader.value) patch.loader = formatLoaderLabel(newLoader.value) as Archon.Servers.v0.Loader
-	if (newLoaderVersion.value) patch.loader_version = newLoaderVersion.value
-	if (newMCVersion.value) patch.mc_version = newMCVersion.value
+	if (platformKey) {
+		patch.loader = formatLoaderLabel(platformKey.platform) as Archon.Servers.v0.Loader
+		patch.loader_version = platformKey.platform === 'vanilla' ? null : platformKey.platform_version
+		patch.mc_version = platformKey.game_version
+	}
 
-	debug('[root.vue] applyOptimisticCompletion: patch:', patch)
+	debug('[root.vue] applyInstallationCompletion: patch:', patch)
 	updateServerData(patch)
 
 	const addonsQueries = queryClient.getQueriesData<Archon.Content.v1.Addons>({
 		queryKey: ['content', 'list', 'v1', props.serverId],
 	})
 	for (const [key, data] of addonsQueries) {
-		if (!data) continue
-		const addonsPatch: Record<string, string> = {}
-		if (newLoader.value) addonsPatch.modloader = newLoader.value
-		if (newLoaderVersion.value) addonsPatch.modloader_version = newLoaderVersion.value
-		if (newMCVersion.value) addonsPatch.game_version = newMCVersion.value
-		if (Object.keys(addonsPatch).length > 0) {
-			queryClient.setQueryData(key, { ...data, ...addonsPatch })
-		}
+		if (!data || !platformKey) continue
+		queryClient.setQueryData(key, {
+			...data,
+			modloader: platformKey.platform === 'neoforge' ? 'neo_forge' : platformKey.platform,
+			modloader_version: platformKey.platform === 'vanilla' ? null : platformKey.platform_version,
+			game_version: platformKey.game_version,
+		})
 	}
-
-	newLoader.value = null
-	newLoaderVersion.value = null
-	newMCVersion.value = null
 }
 
 async function invalidateAfterInstall() {
 	debug('[root.vue] invalidateAfterInstall: scheduling 2s delayed invalidation')
-	isAwaitingPostInstallRefresh.value = true
 	setTimeout(async () => {
 		try {
 			await Promise.all([
@@ -1264,12 +1098,48 @@ async function invalidateAfterInstall() {
 			])
 		} catch (err: unknown) {
 			console.error('Error refreshing data after installation:', err)
-		} finally {
-			isAwaitingPostInstallRefresh.value = false
 		}
 	}, 2000)
 }
 
+let handledFailedInstallationId: string | null = null
+watch(
+	installation,
+	(current, previous) => {
+		if (!current) {
+			if (
+				isMounted.value &&
+				previous?.source === 'optimistic' &&
+				previous.status === 'pending' &&
+				serverData.value?.status === 'installing'
+			) {
+				restoreInstallationServerSnapshot()
+			}
+			return
+		}
+		if (current.status === 'pending' || current.status === 'installing') {
+			handledFailedInstallationId = null
+			applyInstallationTarget(current)
+			return
+		}
+
+		if (current.status === 'failed') {
+			if (handledFailedInstallationId === current.id) return
+			handledFailedInstallationId = current.id
+			if (current.source === 'server') return
+			onReinstallFailed()
+			void invalidateAfterInstall()
+			return
+		}
+
+		applyInstallationCompletion(current.key)
+		installationServerSnapshot = null
+		dismissInstallation(current.id)
+		void invalidateAfterInstall()
+	},
+	{ flush: 'sync' },
+)
+
 const nodeAccessible = ref(true)
 
 const nodeUnavailableDetails = computed(() => [
@@ -1290,7 +1160,7 @@ const nodeUnavailableDetails = computed(() => [
 		label: 'Error message',
 		value: nodeAccessible.value
 			? (serverError.value?.message ?? 'Unknown')
-			: 'Unable to reach node. Ping test failed.',
+			: 'Unable to establish the node WebSocket connection.',
 		type: 'block' as const,
 	},
 ])
@@ -1365,21 +1235,6 @@ const nodeUnavailableAction = computed(() => ({
 	disabled: false,
 }))
 
-const copyServerDebugInfo = () => {
-	const debugInfo = `Server ID: ${serverData.value?.server_id}\nError: ${errorMessage.value}\nKind: ${serverData.value?.upstream?.kind}\nProject ID: ${serverData.value?.upstream?.project_id}\nVersion ID: ${serverData.value?.upstream?.version_id}\nLog: ${errorLog.value}`
-	navigator.clipboard.writeText(debugInfo)
-	copied.value = true
-	setTimeout(() => {
-		copied.value = false
-	}, 5000)
-}
-
-const openInstallLog = () => {
-	const url = `/hosting/manage/${props.serverId}/files?editing=${encodeURIComponent(errorLogFile.value)}`
-	window.history.pushState({}, '', url)
-	window.dispatchEvent(new PopStateEvent('popstate'))
-}
-
 function openServerSettingsModal(tabId?: ServerSettingsTabId) {
 	if (!props.serverId) return
 	serverSettingsModal.value?.show({ serverId: props.serverId, tabId })
@@ -1423,48 +1278,6 @@ function safeStringify(obj: unknown, indent = ' '): string {
 	)
 }
 
-async function testNodeReachability(): Promise<boolean> {
-	const nodeInstance = serverData.value?.node?.instance
-	if (!nodeInstance) return false
-
-	try {
-		const auth = await client.archon.servers_v0.getWebSocketAuth(props.serverId)
-		const authUrl = getNodeWebSocketUrl(auth.url)
-		const protocol = authUrl.toLowerCase().startsWith('ws://') ? 'ws' : 'wss'
-		const wsUrl = getNodeWebSocketUrl(`${nodeInstance}/pingtest`).replace(
-			/^wss?:\/\//i,
-			`${protocol}://`,
-		)
-
-		return await new Promise((resolve) => {
-			const socket = new WebSocket(wsUrl)
-			const timeout = setTimeout(() => {
-				socket.close()
-				resolve(false)
-			}, 5000)
-
-			socket.onopen = () => {
-				clearTimeout(timeout)
-				socket.send(performance.now().toString())
-			}
-
-			socket.onmessage = () => {
-				clearTimeout(timeout)
-				socket.close()
-				resolve(true)
-			}
-
-			socket.onerror = () => {
-				clearTimeout(timeout)
-				resolve(false)
-			}
-		})
-	} catch (error) {
-		console.error(`Failed to ping node ${nodeInstance}:`, error)
-		return false
-	}
-}
-
 function initializeServer() {
 	if (serverData.value?.status === 'suspended') {
 		isLoading.value = false
@@ -1476,31 +1289,18 @@ function initializeServer() {
 		return
 	}
 
-	testNodeReachability()
-		.then((result) => {
-			nodeAccessible.value = result
-			if (!nodeAccessible.value) {
-				isLoading.value = false
-			}
-		})
-		.catch((err) => {
-			console.error('Error testing node reachability:', err)
-			nodeAccessible.value = false
-			isLoading.value = false
-		})
-
 	if (serverError.value) {
 		isLoading.value = false
 	} else {
 		void connectSocket(props.serverId, {
 			extraSubscriptions: (targetServerId) => [
-				client.archon.sockets.on(targetServerId, 'installation-result', handleInstallationResult),
 				client.archon.sockets.on(targetServerId, 'backup-progress', handleBackupProgress),
 				client.archon.sockets.on(targetServerId, 'filesystem-ops', handleFilesystemOps),
 				client.archon.sockets.on(targetServerId, 'new-mod', handleNewMod),
 			],
 		})
 			.then((connected) => {
+				nodeAccessible.value = connected
 				if (connected && cachedWsState?.consoleLines?.length) {
 					modrinthServersConsole.clear()
 					modrinthServersConsole.addLines(cachedWsState.consoleLines)
@@ -1534,11 +1334,6 @@ const cleanup = () => {
 
 onMounted(() => {
 	isMounted.value = true
-	syncPendingServerContentInstalls()
-	window.addEventListener(
-		pendingServerContentInstallsEvent,
-		handlePendingServerContentInstallsChanged,
-	)
 
 	if (serverData.value) {
 		initializeServer()
@@ -1580,10 +1375,6 @@ onMounted(() => {
 })
 
 onUnmounted(() => {
-	window.removeEventListener(
-		pendingServerContentInstallsEvent,
-		handlePendingServerContentInstallsChanged,
-	)
 	cleanup()
 })
 </script>
diff --git a/packages/ui/src/locales/cs-CZ/index.json b/packages/ui/src/locales/cs-CZ/index.json
index fbfe943185..3aaa6c5410 100644
--- a/packages/ui/src/locales/cs-CZ/index.json
+++ b/packages/ui/src/locales/cs-CZ/index.json
@@ -3683,36 +3683,9 @@
   "servers.grant-access-modal.target.searching": {
     "defaultMessage": "Vyhledávání..."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Modrinth Hosting tuto verzi Minecraftu nebo loaderu zatím nepodporuje."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Instalování addonů..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Instalování modpacku..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Instalování platformy..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Připravujeme váš server"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Přidávání Javy..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Konfigurování serveru..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Stahování módů..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizování souborů..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Nastavování prostředí..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Už máte server?"
   },
diff --git a/packages/ui/src/locales/de-CH/index.json b/packages/ui/src/locales/de-CH/index.json
index baf3a3c1dd..cd3932a406 100644
--- a/packages/ui/src/locales/de-CH/index.json
+++ b/packages/ui/src/locales/de-CH/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Server wird installiert"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Inhalt wird synchronisiert"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Auch eine Freundschaftsanfrage senden"
   },
@@ -4667,51 +4664,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Installation fehlgeschlagen"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Ein interner Fehler ist beim Installieren der Platform aufgetreten. Bitte versuch es später erneut."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Der angegebene Loader oder Minecraft Version konnte nicht installiert werden. Sie ist womöglich ungültig oder nicht unterstützt."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Das Modpack konnte nicht installiert werden. Es könnte womöglich beschädigt oder inkompatibel sein."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Diese Modpack-Version enthält keine hrunterladbare Datei. Es wurde womöglich inkorrekt erstellt."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Ein unerwarteter Fehler ist während der Installation aufgetreten."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Diese Version von Minecraft oder des Loaders werden aktuell noch nicht von Modrinth Hosting unterstützt."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Installiere Addons..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Installiere Modpack..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Installiere Platform..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Wir bereiten deinen Server vor"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Füge Java hinzu..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Konfiguriere Server..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Lade Mods herunter..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organisiere Dateien..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Richte die Umgebung ein..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Du hast bereits einen Server?"
   },
diff --git a/packages/ui/src/locales/de-DE/index.json b/packages/ui/src/locales/de-DE/index.json
index 0f21ef03dc..3fdec06fb2 100644
--- a/packages/ui/src/locales/de-DE/index.json
+++ b/packages/ui/src/locales/de-DE/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Server wird installiert"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Inhalt wird synchronisiert"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Auch eine Freundschaftsanfrage senden"
   },
@@ -4667,51 +4664,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Installation fehlgeschlagen"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Während der Installation der Plattform ist ein interner Fehler aufgetreten. Bitte versuche es erneut."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Die angegebene Loader- oder Minecraft-Version konnte nicht installiert werden. Sie ist möglicherweise ungültig oder wird nicht unterstützt."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Das Modpack konnte nicht installiert werden. Es ist eventuell beschädigt oder nicht kompatibel."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Diese Modpack-Version enthält keine herunterladbare Datei. Es wurde eventuell falsch gepackt."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Während der Installation ist ein unerwarteter Fehler aufgetreten."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Diese Version von Minecraft oder des Loaders wird aktuell noch nicht von Modrinth Hosting unterstützt."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Addons werden installiert..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Modpack wird installiert..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Plattform wird installiert..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Wir bereiten deinen Server vor"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Java wird hinzugefügt..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Server wird konfiguriert..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Mods werden heruntergeladen..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Dateien werden organisiert..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Umgebung wird eingerichtet..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Du hast bereits einen Server?"
   },
diff --git a/packages/ui/src/locales/en-US/index.json b/packages/ui/src/locales/en-US/index.json
index 6e96468878..5e462ad38b 100644
--- a/packages/ui/src/locales/en-US/index.json
+++ b/packages/ui/src/locales/en-US/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Server is installing"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Content sync in progress"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Also send a friend request"
   },
@@ -4664,53 +4661,41 @@
   "servers.grant-access-modal.target.searching": {
     "defaultMessage": "Searching..."
   },
-  "servers.installing-banner.error.header": {
-    "defaultMessage": "Installation failed"
+  "servers.installing-banner.description.applying": {
+    "defaultMessage": "Applying your installation changes..."
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "An internal error occurred while installing the platform. Please try again."
+  "servers.installing-banner.description.controls": {
+    "defaultMessage": "Server controls will unlock when installation finishes."
   },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "The specified loader or Minecraft version could not be installed. It may be invalid or unsupported."
+  "servers.installing-banner.description.duration": {
+    "defaultMessage": "This installation may take several minutes..."
   },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "The modpack could not be installed. It may be corrupted or incompatible."
+  "servers.installing-banner.description.preparing": {
+    "defaultMessage": "Preparing your server..."
   },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "This modpack version does not include a downloadable file. It may have been packaged incorrectly."
+  "servers.installing-banner.description.still-working": {
+    "defaultMessage": "Still working—your installation is in progress..."
+  },
+  "servers.installing-banner.error.header": {
+    "defaultMessage": "Installation failed"
   },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "An unexpected error occurred during installation."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "This version of Minecraft or loader is not yet supported by Modrinth Hosting."
+  "servers.installing-banner.installing-local-modpack": {
+    "defaultMessage": "Installing {filename}"
   },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Installing addons..."
+  "servers.installing-banner.installing-minecraft": {
+    "defaultMessage": "Installing Minecraft {version}"
   },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Installing modpack..."
+  "servers.installing-banner.installing-modpack": {
+    "defaultMessage": "Installing modpack"
   },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Installing platform..."
+  "servers.installing-banner.installing-platform": {
+    "defaultMessage": "Installing {loader} for Minecraft {version}"
   },
   "servers.installing-banner.preparing.header": {
-    "defaultMessage": "We're preparing your server"
-  },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Adding Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Configuring server..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Downloading mods..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizing files..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Setting up environment..."
+    "defaultMessage": "Preparing your server"
   },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Already have a server?"
diff --git a/packages/ui/src/locales/es-419/index.json b/packages/ui/src/locales/es-419/index.json
index 626f547ae2..91571c0ef5 100644
--- a/packages/ui/src/locales/es-419/index.json
+++ b/packages/ui/src/locales/es-419/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "El servidor se está instalando"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Sincronización de contenido en curso"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Mandar solicitud de amistad también"
   },
@@ -4667,51 +4664,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Fallo en la instalación"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Se ha producido un error interno durante la instalación de la plataforma. Por favor, inténtalo de nuevo."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "No se pudo instalar el loader o la versión de Minecraft especificados. Es posible que no sean válidos o que no sean compatibles."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "No se pudo instalar el modpack. Es posible que esté dañado o que no sea compatible."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Esta versión del modpack no incluye ningún archivo descargable. Es posible que se haya empaquetado incorrectamente."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Se produjo un error inesperado durante la instalación."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Esta versión de Minecraft o del loader aún no es compatible con Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Instalando addons..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Instalando modpack..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Instalando plataforma..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Estamos preparando tu servidor"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Añadiendo java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Configurando servidor..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Descargando mods..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizando archivos..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Preparando entorno..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "¿Ya tienes un servidor?"
   },
diff --git a/packages/ui/src/locales/es-ES/index.json b/packages/ui/src/locales/es-ES/index.json
index fab7c1f684..6640d3e317 100644
--- a/packages/ui/src/locales/es-ES/index.json
+++ b/packages/ui/src/locales/es-ES/index.json
@@ -4607,9 +4607,6 @@
   "servers.busy.installing": {
     "defaultMessage": "El servidor se está instalando"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Sincronización de contenido en progreso"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Enviar también una solicitud de amistad"
   },
@@ -4664,51 +4661,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Instalación fallida"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Se ha producido un error interno durante la instalación de la plataforma. Por favor, inténtalo de nuevo."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "No se pudo instalar el loader o la versión de Minecraft especificados. Es posible que no sean válidos o que no sean compatibles."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "No se pudo instalar el modpack. Es posible que esté dañado o que no sea compatible."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Esta versión del modpack no incluye ningún archivo descargable. Es posible que se haya empaquetado incorrectamente."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Se produjo un error inesperado durante la instalación."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Esta versión de Minecraft o del loader aún no es compatible con Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Instalando addons..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Instalando modpack..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Instalando plataforma..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Estamos preparando tu servidor"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Añadiendo Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Configurando servidor..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Descargando mods..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizando archivos..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Preparando entorno..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "¿Ya tienes un servidor?"
   },
diff --git a/packages/ui/src/locales/fr-FR/index.json b/packages/ui/src/locales/fr-FR/index.json
index 4f224d92bc..1568348248 100644
--- a/packages/ui/src/locales/fr-FR/index.json
+++ b/packages/ui/src/locales/fr-FR/index.json
@@ -4604,9 +4604,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Le serveur est en cours d'installation"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Synchronisation du contenu en cours"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Envoyer également une demande d'ami"
   },
@@ -4661,51 +4658,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Impossible d'installer"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Une erreur interne est survenue lors de l'installation de la platforme. Veuillez réessayer plus tard."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Le loader ou la version Minecraft spécifiée n'a pas pu être installée. Elle est peut-être invalide ou non prise en charge."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Le modpack n'a pas pu être installé. Il est peut-être corrompu ou incompatible."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Cette version de modpack ne contient pas de fichier téléchargeable. Il a peut-être été empaqueté incorrectement."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Une erreur inattendue est survenue lors de l'installation."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Cette version de Minecraft ou ce loader n'est peut-être pas encore bien pris en charge par Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Installation des add-ons..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Installation du modpack..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Installation de la platforme..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Nous préparons votre serveur"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Ajout de Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Configuration du serveur..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Téléchargement de mods..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organisation des fichiers..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Mise en place de l'environnement..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Vous avez déjà un serveur ?"
   },
diff --git a/packages/ui/src/locales/hu-HU/index.json b/packages/ui/src/locales/hu-HU/index.json
index 429f6a088d..2925435f28 100644
--- a/packages/ui/src/locales/hu-HU/index.json
+++ b/packages/ui/src/locales/hu-HU/index.json
@@ -3935,39 +3935,9 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "A telepítés nem sikerült"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Egy internal hiba történt a telepítés közben. Kérlek probáld újra."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Ez a modcsomag-verzió nem tartalmaz letölthető fájlt. Lehet, hogy hibásan lett összeállítva."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Kiegészítők telepítése..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "A modcsomag telepítése..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "A platform telepítése..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Előkészítjük a szervered"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Java hozzáadása..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "A szerver beállítása..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Modok letöltése..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Fájlok rendezése..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Környezet beállítása..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Már van egy szervered?"
   },
diff --git a/packages/ui/src/locales/it-IT/index.json b/packages/ui/src/locales/it-IT/index.json
index 02ebe7b976..560f3bf1d2 100644
--- a/packages/ui/src/locales/it-IT/index.json
+++ b/packages/ui/src/locales/it-IT/index.json
@@ -4568,9 +4568,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Installazione del server in corso"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Sincronizzazione dei contenuti in corso"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Invia anche una richiesta di amicizia"
   },
@@ -4640,36 +4637,9 @@
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Si è verificato un errore durante l'installazione."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Questa versione di Minecraft o del loader non è ancora supportata da Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Installando gli addon..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Installando il pacchetto..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Installando la piattaforma..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Stiamo preparando il tuo server"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Aggiungendo Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Configurando il server..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Scaricando le mod..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizzando i file..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Configurando l'ambiente..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Hai già un server?"
   },
diff --git a/packages/ui/src/locales/ja-JP/index.json b/packages/ui/src/locales/ja-JP/index.json
index f80815d161..d3fbc611a5 100644
--- a/packages/ui/src/locales/ja-JP/index.json
+++ b/packages/ui/src/locales/ja-JP/index.json
@@ -4448,9 +4448,6 @@
   "servers.busy.installing": {
     "defaultMessage": "サーバーがインストール中です"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "コンテンツの同期処理中です"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "フレンドのリクエストも送信する"
   },
@@ -4505,51 +4502,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "インストールが失敗しました"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "プラットフォームのインストール中、内部エラーが発生しました。もう一度お試しください。"
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "特定のModローダーMinecraftのバージョンをインストールできませんでした。いずれかが非対応または無効である可能性があります。"
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "このModパックをインストールすることができませんでした。Modが非対応または破損している可能性があります。"
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "このModパックのバージョンには、ダウンロード可能なファイルが含まれていません。パッケージ化が正しく行われていない可能性があります。"
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "インストール中に予期せぬエラーが発生しました。"
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "このMinecraftのバージョンまたはModローダーはModrinthホスティングでまだ対応されていません。"
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "アドオンをインストールしています…"
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Modパックをインストールしています…"
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "プラットフォームをインストールしています…"
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "あなたのサーバーを準備しています"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Javaを追加しています…"
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "サーバーの設定をしています…"
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Modをダウンロードしています…"
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "ファイルを整理しています…"
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "環境を整えています…"
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "既にサーバーをお持ちですか？"
   },
diff --git a/packages/ui/src/locales/ko-KR/index.json b/packages/ui/src/locales/ko-KR/index.json
index 7ce577da9e..1e285c0be8 100644
--- a/packages/ui/src/locales/ko-KR/index.json
+++ b/packages/ui/src/locales/ko-KR/index.json
@@ -4595,9 +4595,6 @@
   "servers.busy.installing": {
     "defaultMessage": "서버 설치 중"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "콘텐츠 동기화 진행 중"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "친구 요청도 보내기"
   },
@@ -4652,51 +4649,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "설치 실패"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "플랫폼 설치 중 내부 오류가 발생했습니다. 다시 시도해 주세요."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "지정한 로더 또는 마인크래프트 버전을 설치할 수 없습니다. 유효하지 않거나 지원되지 않는 것일 수 있습니다."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "모드팩을 설치할 수 없습니다. 파일이 손상되었거나 호환되지 않을 수 있습니다."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "이 모드팩 버전은 다운로드 가능한 파일을 포함되어 있지 않습니다. 패키징이 잘못되었을 수 있습니다."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "설치 중 알 수 없는 오류가 발생했습니다."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "이 미인크래프트 또는 로더 버전은 아직 Modrinth Hosting에서 지원되지 않습니다."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "애드온 설치 중..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "모드팩 설치 중..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "플랫폼 설치 중..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "서버를 준비하고 있습니다"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Java 추가 중..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "서버 구성 중..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "모드 다운로드 중..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "파일 준비 중..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "환경 설정 중..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "서버가 이미 있으신가요?"
   },
diff --git a/packages/ui/src/locales/ms-MY/index.json b/packages/ui/src/locales/ms-MY/index.json
index 225cb67d6c..37bb0bd123 100644
--- a/packages/ui/src/locales/ms-MY/index.json
+++ b/packages/ui/src/locales/ms-MY/index.json
@@ -3878,9 +3878,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Pelayan sedang dipasang"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Penyegerakan kandungan sedang dijalankan"
-  },
   "servers.grant-access-modal.cancel": {
     "defaultMessage": "Batal"
   },
@@ -3911,45 +3908,9 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Pemasangan gagal"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Sebuah ralat dalaman telah berlaku semasa memasang platform. Sila cuba lagi kemudian."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Pemuat atau versi Minecraft yang dinyatakan tidak dapat dipasang. Ia mungkin tidak sah atau tidak disokong."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Versi pek mod ini tidak menyertakan fail yang boleh dimuat turun. Ia mungkin telah dibungkus secara salah."
-  },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Versi Minecraft atau pemuat ini belum disokong oleh Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Sedang memasang tambahan..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Sedang memasang pek mod..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Sedang memasang platform..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Kami sedang menyediakan pelayan anda"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Sedang menambah Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Sedang mengkonfigurasikan pelayan..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Sedang memuat turun mod..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Sedang menyusun fail..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Sedang menyediakan persekitaran..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Sudah mempunyai pelayan?"
   },
diff --git a/packages/ui/src/locales/nl-NL/index.json b/packages/ui/src/locales/nl-NL/index.json
index 44ed5407ee..f2d797041e 100644
--- a/packages/ui/src/locales/nl-NL/index.json
+++ b/packages/ui/src/locales/nl-NL/index.json
@@ -4601,9 +4601,6 @@
   "servers.busy.installing": {
     "defaultMessage": "De server wordt geïnstalleerd"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Inhoud wordt gesynchroniseerd"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Ook een vriendschapsverzoek sturen"
   },
@@ -4658,51 +4655,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Installeren is mislukt"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Er is een interne fout opgetreden tijdens het installeren van het platform. Probeer het nog eens."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "De opgegeven loader of Minecraft-versie kon niet worden geïnstalleerd. Deze is mogelijk ongeldig of wordt niet ondersteund."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Het modpack kon niet worden geïnstalleerd. Het is mogelijk beschadigd of niet compatibel."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Deze versie van het modpack bevat geen downloadbaar bestand. Mogelijk is het pakket niet correct samengesteld."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Tijdens de installatie is er een onverwachte fout opgetreden."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Deze versie van Minecraft of loader wordt nog niet ondersteund door Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Add-ons aan het installeren..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Modpack aan het installeren..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Platform aan het installeren..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "We zijn je server aan het klaarmaken"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Java toevoegen..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Server wordt geconfigureerd..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Mods worden gedownload..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Bestanden worden geordend..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Omgeving wordt opgezet..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Heb je al een server?"
   },
diff --git a/packages/ui/src/locales/pl-PL/index.json b/packages/ui/src/locales/pl-PL/index.json
index 579d0fdf09..1baf3fd122 100644
--- a/packages/ui/src/locales/pl-PL/index.json
+++ b/packages/ui/src/locales/pl-PL/index.json
@@ -4574,9 +4574,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Serwer jest instalowany"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Synchronizacja zawartości w toku"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Wyślij także zaproszenie do znajomych"
   },
@@ -4631,51 +4628,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Instalacja nie powiodła się"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Wystąpił wewnętrzny błąd podczas instalowania platformy. Spróbuj ponownie później."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Nie udało się zainstalować podanego loadera lub podanej wersji Minecraft. Mogą być niepoprawne lub niewspierane."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Nie udało się zainstalować paczki modów. Może być zepsuta lub niekompatybilna."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Ta wersja paczki modów nie zawiera pliku do pobrania. Możliwe, że została niepoprawnie zapakowana."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Wystąpił nieoczekiwany błąd podczas instalacji."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Ta wersja Minecraft lub loader nie są jeszcze wspierane przez Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Instalowanie dodatków..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Instalowanie paczki modów..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Instalowanie platformy..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Przygotowujemy Twój serwer"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Dodawanie Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Ustawianie serwera..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Pobieranie modów..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizowanie plików..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Ustawianie środowiska..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Posiadasz już serwer?"
   },
diff --git a/packages/ui/src/locales/pt-BR/index.json b/packages/ui/src/locales/pt-BR/index.json
index 2467fbbb69..7d12f3aa55 100644
--- a/packages/ui/src/locales/pt-BR/index.json
+++ b/packages/ui/src/locales/pt-BR/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "O servidor está sendo instalado"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Sincronização de conteúdo em andamento"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Envie também um pedido de amizade"
   },
@@ -4667,51 +4664,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "A instalação falhou"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Ocorreu um erro interno durante a instalação da plataforma. Tente novamente."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Não foi possível instalar o carregador ou a versão do Minecraft especificada. Ela pode ser inválida ou não suportada."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "O pacote de mods não pôde ser instalado. Ele pode estar corrompido ou ser incompatível."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Esta versão do pacote de mods não inclui um arquivo para download. Ela pode ter sido empacotada incorretamente."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Um erro inesperado ocorreu durante a instalação"
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Esta versão do Minecraft ou do carregador ainda não é suportada pelo Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Instalando complementos..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Instalando pacote de mods..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Instalando plataforma"
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Nós estamos preparando seu servidor"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Adicionando Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Configurando servidor..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Baixando mods..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organizando arquivos..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Configurando ambiente..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Já possui um servidor?"
   },
diff --git a/packages/ui/src/locales/ru-RU/index.json b/packages/ui/src/locales/ru-RU/index.json
index 31701a083b..d5de539e9b 100644
--- a/packages/ui/src/locales/ru-RU/index.json
+++ b/packages/ui/src/locales/ru-RU/index.json
@@ -4523,9 +4523,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Сервер устанавливается"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Синхронизация контента в процессе"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Также отправить запрос в друзья"
   },
@@ -4580,51 +4577,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Установка не удалась"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Во время установки платформы произошла внутренняя ошибка. Попробуйте ещё раз."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Не удалось установить указанную версию загрузчика или Minecraft. Возможно, она недействительна или не поддерживается."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Не удалось установить сборку модов. Возможно, она повреждена или несовместима."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Эта версия сборки не содержит загрузочного файла. Возможно, она была собрана неправильно."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Во время установки произошла непредвиденная ошибка."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Эта версия Minecraft или загрузчика пока не поддерживается Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Установка дополнений..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Установка сборки..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Установка платформы..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Подготовка сервера"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Добавление Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Настройка сервера..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Скачивание модов..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Упорядочивание файлов..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Настройка среды..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Уже есть сервер?"
   },
diff --git a/packages/ui/src/locales/sr-CS/index.json b/packages/ui/src/locales/sr-CS/index.json
index ad1b71e4ae..73572f3be7 100644
--- a/packages/ui/src/locales/sr-CS/index.json
+++ b/packages/ui/src/locales/sr-CS/index.json
@@ -4367,9 +4367,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Server se instalira"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Sinhronizacija sadržaja u toku"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Pošalji i zahtev za prijateljstvo"
   },
@@ -4424,51 +4421,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Neuspešna instalacija"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Došlo je do interne greške prilikom instaliranja platforme. Molimo te, pokušaj ponovo."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Navedeni učitavač ili verzija Minecrafta se ne mogu instalirati. Moguće je da su nevažeći ili nepodržani."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Modpak nije mogao biti instaliran. Možda je oštećen ili nekompatibilan."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Ova verzija modpaka ne uključuje datoteku za preuzimanje. Moguće je da je pogrešno upakovana."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Došlo je do neočekivane greške tokom instalacije."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Ova verzija Minecrafta ili učitavača još uvek nije podržana od strane Modrinth Hosting-a."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Instaliranje addona..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Instaliranje modpacka..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Instaliranje platforme..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Pripremamo tvoj server"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Dodavanje Jave..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Konfigurisanje servera..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Instaliranje modova..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organiziranje datoteka..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Podešavanje okruženja..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Već imaš server?"
   },
diff --git a/packages/ui/src/locales/sv-SE/index.json b/packages/ui/src/locales/sv-SE/index.json
index a8bd5ccf7f..81babea86a 100644
--- a/packages/ui/src/locales/sv-SE/index.json
+++ b/packages/ui/src/locales/sv-SE/index.json
@@ -4211,21 +4211,6 @@
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Vi förbereder din server"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Lägger till Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Konfigurerar server..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Laddar ner moddar..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Organiserar filer..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Ställer in miljö..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Har du redan en server?"
   },
@@ -5463,4 +5448,3 @@
     "defaultMessage": "Typ"
   }
 }
-
diff --git a/packages/ui/src/locales/tr-TR/index.json b/packages/ui/src/locales/tr-TR/index.json
index 8fa466b737..144adf32ec 100644
--- a/packages/ui/src/locales/tr-TR/index.json
+++ b/packages/ui/src/locales/tr-TR/index.json
@@ -4421,9 +4421,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Sunucu kuruluyor"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "İçerik eşlemesi sürüyor"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Ayrıca bir arkadaş isteği gönderin"
   },
@@ -4478,51 +4475,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Kurulum başarısız oldu"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Platform yüklenirken dahili bir hata oluştu. Lütfen tekrar deneyin."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Belirtilen yükleyici veya Minecraft sürümü kurulamazdı. Belki de geçersiz veya desteklenmeyen bir sürüm olabilir."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Mod paketi yüklenemedi. Bozuk veya uyumsuz olabilir."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Bu mod paketi sürümü indirilebilir bir dosya içermez. Yanlış paketlenmiş olabilir."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Kurulum sırasında beklenmeyen bir hata oluştu."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Minecraft veya yükleyicinin bu sürümü henüz Modrinth Hosting tarafından desteklenmemektedir."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Eklentiler yükleniyor..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Mod paketi indiriliyor..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Platform yükleniyor..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Sunucunuzu hazırlıyoruz"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Java ekleniyor..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Sunucu yapılandırılıyor..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Modlar indiriliyor..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Dosyalar düzenleniyor..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Ortam hazırlanıyor..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Zaten sunucunuz var mı?"
   },
diff --git a/packages/ui/src/locales/uk-UA/index.json b/packages/ui/src/locales/uk-UA/index.json
index 95bbf42123..d3ab05e59a 100644
--- a/packages/ui/src/locales/uk-UA/index.json
+++ b/packages/ui/src/locales/uk-UA/index.json
@@ -4565,9 +4565,6 @@
   "servers.busy.installing": {
     "defaultMessage": "Сервер установлюється"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Триває синхронізація вмісту"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "Також відправити запит у друзі"
   },
@@ -4622,51 +4619,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "Не вдалося встановити"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Під час установлення платформи сталася внутрішня помилка. Спробуйте ще раз."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Не вдалося встановити вказаний завантажувач або версію Minecraft. Він може бути недійсним або не підтримуватися."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Збірку не вдалося встановити. Вона може бути пошкоджена або несумісна."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Ця версія збірки не містить завантажуваних файлів. Можливо, вона була неправильно впакований."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Під час встановлення сталася неочікувана помилка."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Ця версія Minecraft або завантажувача ще не підтримується Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Установлення доповнень…"
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Установлення збірки…"
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Установлення платформи…"
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Ми підготовлюємо ваш сервер"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Додання Java…"
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Налаштування сервера…"
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Завантаження модів…"
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Організування файлів…"
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Налаштування середовища…"
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Уже маєте сервер?"
   },
diff --git a/packages/ui/src/locales/vi-VN/index.json b/packages/ui/src/locales/vi-VN/index.json
index f65e18d54c..f783d9359d 100644
--- a/packages/ui/src/locales/vi-VN/index.json
+++ b/packages/ui/src/locales/vi-VN/index.json
@@ -3911,57 +3911,15 @@
   "servers.busy.installing": {
     "defaultMessage": "Đang cài máy chủ"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "Đang đồng bộ nội dung"
-  },
   "servers.installing-banner.error.header": {
     "defaultMessage": "Tải thất bại"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "Đã xảy ra lỗi nội bộ trong quá trình cài đặt nền tảng. Thử lại."
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "Không thể tải loader hoặc phiên bản Minecraft đã chọn. Nó có thể không phù hợp hoặc không được hỗ trợ."
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "Modpack này không thể tải được. Nó có thể bị hỏng hoặc không tương thích."
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "Phiên bản modpack này không chứa tệp có thể tải xuống. Nó có thể không được làm đúng cách."
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "Có lỗi lạ xảy ra trong khi tải."
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Phiên bản minecraft hoặc loader hiện không được hỗ trợ bởi Modrinth Hosting."
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "Đang cài addon..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "Đang cài modpack..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "Đang cài platform..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "Chúng tôi đang sửa máy chủ của bạn"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "Đang thêm Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "Đang chỉnh sửa máy chủ..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "Đang tải mod..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "Đang sắp sếp tệp..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "Đang thiết lập môi trường..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "Đã có máy chủ rồi?"
   },
diff --git a/packages/ui/src/locales/zh-CN/index.json b/packages/ui/src/locales/zh-CN/index.json
index 91aa213378..8dde7dc882 100644
--- a/packages/ui/src/locales/zh-CN/index.json
+++ b/packages/ui/src/locales/zh-CN/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "正在安装服务器"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "正在同步內容"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "同时发送好友邀请"
   },
@@ -4667,51 +4664,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "安装失败"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "安装平台时发生内部错误，请重试。"
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "指定的加载器或 Minecraft 版本无法安装。它可能无效或不受支持。"
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "整合包无法安装。它可能已损坏或不兼容。"
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "这个整合包版本不包含可下载的文件，可能是打包方式有问题。"
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "安装过程中发生意外错误。"
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Modrinth Hosting 目前尚不支持此版本的 Minecraft 或加载器。"
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "正在安装组件……"
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "正在安装整合包……"
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "正在安装平台……"
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "我们正在准备你的服务器"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "正在添加 Java……"
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "正在配置服务器……"
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "正在下载模组……"
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "正在整理文件……"
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "正在设置运行环境……"
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "已经有服务器了吗？"
   },
diff --git a/packages/ui/src/locales/zh-TW/index.json b/packages/ui/src/locales/zh-TW/index.json
index c7cb96b9eb..1aa1b58391 100644
--- a/packages/ui/src/locales/zh-TW/index.json
+++ b/packages/ui/src/locales/zh-TW/index.json
@@ -4610,9 +4610,6 @@
   "servers.busy.installing": {
     "defaultMessage": "正在安裝伺服器"
   },
-  "servers.busy.syncing-content": {
-    "defaultMessage": "正在同步內容"
-  },
   "servers.grant-access-modal.add-as-friend": {
     "defaultMessage": "同時傳送好友邀請"
   },
@@ -4667,51 +4664,12 @@
   "servers.installing-banner.error.header": {
     "defaultMessage": "無法安裝"
   },
-  "servers.installing-banner.error.internal-platform": {
-    "defaultMessage": "安裝平臺時發生內部錯誤，請再試一次。"
-  },
-  "servers.installing-banner.error.invalid-loader-version": {
-    "defaultMessage": "無法安裝指定的載入器或 Minecraft 版本。該載入器或版本可能無效或不受支援。"
-  },
-  "servers.installing-banner.error.modpack-install-failed": {
-    "defaultMessage": "無法安裝模組包。該模組包可能已損毀或不相容。"
-  },
-  "servers.installing-banner.error.no-primary-file": {
-    "defaultMessage": "這個模組包版本不包含可下載檔案。可能是打包時出了問題。"
-  },
   "servers.installing-banner.error.unknown": {
     "defaultMessage": "安裝時發生非預期的錯誤。"
   },
-  "servers.installing-banner.error.unsupported-loader-version": {
-    "defaultMessage": "Modrinth Hosting 尚不支援這個 Minecraft 版本或載入器。"
-  },
-  "servers.installing-banner.phase.installing-addons": {
-    "defaultMessage": "正在安裝額外內容..."
-  },
-  "servers.installing-banner.phase.installing-modpack": {
-    "defaultMessage": "正在安裝模組包..."
-  },
-  "servers.installing-banner.phase.installing-platform": {
-    "defaultMessage": "正在安裝平臺..."
-  },
   "servers.installing-banner.preparing.header": {
     "defaultMessage": "我們正在為你準備伺服器"
   },
-  "servers.installing-banner.ticker.adding-java": {
-    "defaultMessage": "正在新增 Java..."
-  },
-  "servers.installing-banner.ticker.configuring-server": {
-    "defaultMessage": "正在設定伺服器..."
-  },
-  "servers.installing-banner.ticker.downloading-mods": {
-    "defaultMessage": "正在下載模組..."
-  },
-  "servers.installing-banner.ticker.organizing-files": {
-    "defaultMessage": "正在整理檔案..."
-  },
-  "servers.installing-banner.ticker.setting-up-environment": {
-    "defaultMessage": "正在設定環境..."
-  },
   "servers.list-empty.already-have-server-label": {
     "defaultMessage": "已經有伺服器了嗎？"
   },
diff --git a/packages/ui/src/providers/server-context.ts b/packages/ui/src/providers/server-context.ts
index 7431839807..7162aa8914 100644
--- a/packages/ui/src/providers/server-context.ts
+++ b/packages/ui/src/providers/server-context.ts
@@ -2,6 +2,10 @@ import type { Archon, UploadState } from '@modrinth/api-client'
 import type { ComputedRef, Ref } from 'vue'
 
 import type { MessageDescriptor } from '#ui/composables/i18n'
+import type {
+	ServerInstallationKey,
+	ServerInstallationState,
+} from '#ui/composables/server-installation-tracker'
 import type { FileOperation } from '#ui/layouts/shared/files-tab/types'
 
 import { createContext } from '.'
@@ -49,9 +53,11 @@ export interface ModrinthServerContext {
 	readonly isServerRunning: ComputedRef<boolean>
 	readonly stats: Ref<ServerStats>
 	readonly uptimeSeconds: Ref<number>
-
-	// Content sync state
-	readonly isSyncingContent: Ref<boolean>
+	readonly installProgressItems: Ref<Archon.Websocket.v0.InstallProgressItem[]>
+	readonly installation: ComputedRef<ServerInstallationState | null>
+	beginInstallation: (key: ServerInstallationKey) => void
+	cancelOptimisticInstallation: () => void
+	dismissInstallation: (id: string) => void
 
 	// Busy state — when non-empty, all write operations should be disabled
 	readonly busyReasons: ComputedRef<BusyReason[]>
diff --git a/packages/ui/src/stories/servers/EditServerIcon.stories.ts b/packages/ui/src/stories/servers/EditServerIcon.stories.ts
index 04d05a15f9..03ae672600 100644
--- a/packages/ui/src/stories/servers/EditServerIcon.stories.ts
+++ b/packages/ui/src/stories/servers/EditServerIcon.stories.ts
@@ -71,7 +71,11 @@ const meta = {
 					isServerRunning: computed(() => true),
 					stats,
 					uptimeSeconds: ref(0),
-					isSyncingContent: ref(false),
+					installProgressItems: ref<Archon.Websocket.v0.InstallProgressItem[]>([]),
+					installation: computed(() => null),
+					beginInstallation: () => {},
+					cancelOptimisticInstallation: () => {},
+					dismissInstallation: () => {},
 					busyReasons: computed(() => []),
 					fsAuth: ref(null),
 					fsOps: ref<Archon.Websocket.v0.FilesystemOperation[]>([]),
diff --git a/packages/ui/src/stories/servers/InstallingBanner.stories.ts b/packages/ui/src/stories/servers/InstallingBanner.stories.ts
index cdf65e9da2..4921477280 100644
--- a/packages/ui/src/stories/servers/InstallingBanner.stories.ts
+++ b/packages/ui/src/stories/servers/InstallingBanner.stories.ts
@@ -1,6 +1,85 @@
+import type { Archon, UploadState } from '@modrinth/api-client'
 import type { Meta, StoryObj } from '@storybook/vue3-vite'
+import { computed, ref } from 'vue'
 
 import InstallingBanner from '../../components/servers/InstallingBanner.vue'
+import type { ServerInstallationState } from '../../composables/server-installation-tracker'
+import { provideModrinthServerContext } from '../../providers'
+import type {
+	CancelUploadHandler,
+	ModrinthServerContext,
+	ServerStats,
+} from '../../providers/server-context'
+
+function renderInstallation(state: ServerInstallationState) {
+	return () => ({
+		components: { InstallingBanner },
+		setup() {
+			const installation = ref<ServerInstallationState | null>(state)
+			const serverContext: ModrinthServerContext = {
+				get serverId() {
+					return 'story-server'
+				},
+				worldId: ref<string | null>('story-world'),
+				server: ref({
+					server_id: 'story-server',
+					status: 'installing',
+				} as Archon.Servers.v0.Server),
+				serverFull: computed(() => null),
+				currentUserPermissions: computed(() => 0),
+				isConnected: ref(true),
+				isWsAuthIncorrect: ref(false),
+				powerState: ref('stopped'),
+				powerStateDetails: ref(undefined),
+				isServerRunning: computed(() => false),
+				stats: ref<ServerStats>({
+					current: {
+						cpu_percent: 0,
+						ram_usage_bytes: 0,
+						ram_total_bytes: 1,
+						storage_usage_bytes: 0,
+						storage_total_bytes: 0,
+					},
+					past: {
+						cpu_percent: 0,
+						ram_usage_bytes: 0,
+						ram_total_bytes: 1,
+						storage_usage_bytes: 0,
+						storage_total_bytes: 0,
+					},
+					graph: { cpu: [], ram: [] },
+				}),
+				uptimeSeconds: ref(0),
+				installProgressItems: ref<Archon.Websocket.v0.InstallProgressItem[]>([]),
+				installation: computed(() => installation.value),
+				beginInstallation: () => {},
+				cancelOptimisticInstallation: () => {},
+				dismissInstallation: () => {
+					installation.value = null
+				},
+				busyReasons: computed(() => []),
+				fsAuth: ref(null),
+				fsOps: ref<Archon.Websocket.v0.FilesystemOperation[]>([]),
+				fsQueuedOps: ref<Archon.Websocket.v0.QueuedFilesystemOp[]>([]),
+				refreshFsAuth: async () => {},
+				uploadState: ref<UploadState>({
+					isUploading: false,
+					currentFileName: null,
+					currentFileProgress: 0,
+					uploadedBytes: 0,
+					totalBytes: 0,
+					completedFiles: 0,
+					totalFiles: 0,
+				}),
+				cancelUpload: ref<CancelUploadHandler | null>(null),
+				activeOperations: computed(() => []),
+				dismissOperation: async () => {},
+			}
+			provideModrinthServerContext(serverContext)
+		},
+		template: '<InstallingBanner />',
+	})
+}
 
 const meta = {
 	title: 'Servers/InstallingBanner',
@@ -10,109 +89,110 @@ const meta = {
 export default meta
 type Story = StoryObj<typeof meta>
 
-export const Default: Story = {
-	name: 'Default (no progress)',
-}
-
-export const WithProgress: Story = {
-	args: {
-		progress: {
-			phase: 'InstallingLoader',
-			percent: 45,
+export const PlatformPending: Story = {
+	render: renderInstallation({
+		id: 'platform:fabric:0.16.14:1.21.1',
+		key: {
+			type: 'platform',
+			platform: 'fabric',
+			platform_version: '0.16.14',
+			game_version: '1.21.1',
 		},
-	},
-}
-
-export const IndeterminateLoaderInstall: Story = {
-	args: {
-		progress: {
-			phase: 'InstallingLoader',
-			percent: 0,
-		},
-	},
-}
-
-export const InstallingModpack: Story = {
-	args: {
-		progress: {
-			phase: 'InstallingPack',
-			percent: 72,
-		},
-	},
+		status: 'pending',
+		progress: null,
+		error: null,
+		source: 'optimistic',
+	}),
 }
 
-export const InstallingAddons: Story = {
-	args: {
-		progress: {
-			phase: 'Addons',
-			percent: 90,
+export const PlatformProgress: Story = {
+	render: renderInstallation({
+		id: 'platform:fabric:0.16.14:1.21.1',
+		key: {
+			type: 'platform',
+			platform: 'fabric',
+			platform_version: '0.16.14',
+			game_version: '1.21.1',
 		},
-	},
+		status: 'installing',
+		progress: 45,
+		error: null,
+		source: 'websocket',
+	}),
 }
 
-export const ErrorInvalidVersion: Story = {
-	name: 'Error: Invalid Version',
-	args: {
-		contentError: {
-			step: 'modloader',
-			description: 'the specified version may be incorrect',
+export const Vanilla: Story = {
+	render: renderInstallation({
+		id: 'platform:vanilla::1.21.1',
+		key: {
+			type: 'platform',
+			platform: 'vanilla',
+			platform_version: '',
+			game_version: '1.21.1',
 		},
-	},
+		status: 'installing',
+		progress: 20,
+		error: null,
+		source: 'websocket',
+	}),
 }
 
-export const ErrorUnsupportedVersion: Story = {
-	name: 'Error: Unsupported Version',
-	args: {
-		contentError: {
-			step: 'modloader',
-			description: 'this version is not yet supported',
+export const Modpack: Story = {
+	render: renderInstallation({
+		id: 'modrinth-modpack:project:version',
+		key: {
+			type: 'modrinth_modpack',
+			project_id: 'project',
+			version_id: 'version',
 		},
-	},
+		status: 'installing',
+		progress: 72,
+		error: null,
+		source: 'websocket',
+	}),
 }
 
-export const ErrorInternal: Story = {
-	name: 'Error: Internal',
-	args: {
-		contentError: {
-			step: 'modloader',
-			description: 'internal error',
+export const PlatformFailed: Story = {
+	render: renderInstallation({
+		id: 'platform:quilt:0.30.1-beta.2:1.14.4',
+		key: {
+			type: 'platform',
+			platform: 'quilt',
+			platform_version: '0.30.1-beta.2',
+			game_version: '1.14.4',
 		},
-	},
+		status: 'failed',
+		progress: null,
+		error: 'Platform installer failed',
+		source: 'websocket',
+	}),
 }
 
-export const ErrorModpackInstall: Story = {
-	name: 'Error: Modpack Install Failed',
-	args: {
-		contentError: {
-			step: 'modpack',
-			description: 'Failed to install modpack',
+export const ModpackFailed: Story = {
+	render: renderInstallation({
+		id: 'modrinth-modpack:project:version',
+		key: {
+			type: 'modrinth_modpack',
+			project_id: 'project',
+			version_id: 'version',
 		},
-	},
+		status: 'failed',
+		progress: null,
+		error: 'The modpack does not include a downloadable file',
+		source: 'websocket',
+	}),
 }
 
-export const ErrorModpackNoFile: Story = {
-	name: 'Error: Modpack No Primary File',
-	args: {
-		contentError: {
-			step: 'modpack',
-			description: 'Modpack version has no primary file',
+export const LocalModpackFailed: Story = {
+	render: renderInstallation({
+		id: 'local-modpack:example.mrpack',
+		key: {
+			type: 'local_modpack',
+			filename: 'example.mrpack',
 		},
-	},
-}
-
-export const AllStates: Story = {
-	render: () => ({
-		components: { InstallingBanner },
-		template: /*html*/ `
-			<div style="display: flex; flex-direction: column; gap: 1rem;">
-				<InstallingBanner />
-				<InstallingBanner :progress="{ phase: 'InstallingLoader', percent: 0 }" />
-				<InstallingBanner :progress="{ phase: 'InstallingLoader', percent: 45 }" />
-				<InstallingBanner :content-error="{ step: 'modloader', description: 'the specified version may be incorrect' }" />
-				<InstallingBanner :content-error="{ step: 'modloader', description: 'this version is not yet supported' }" />
-				<InstallingBanner :content-error="{ step: 'modloader', description: 'internal error' }" />
-				<InstallingBanner :content-error="{ step: 'modpack', description: 'Failed to install modpack' }" />
-			</div>
-		`,
+		status: 'failed',
+		progress: null,
+		error: 'The modpack could not be read',
+		source: 'websocket',
 	}),
 }
diff --git a/packages/ui/src/stories/servers/ServerPanelAdmonitions.stories.ts b/packages/ui/src/stories/servers/ServerPanelAdmonitions.stories.ts
index aeccb82689..f5dff5d1e9 100644
--- a/packages/ui/src/stories/servers/ServerPanelAdmonitions.stories.ts
+++ b/packages/ui/src/stories/servers/ServerPanelAdmonitions.stories.ts
@@ -88,7 +88,11 @@ const meta = {
 					isServerRunning: computed(() => true),
 					stats,
 					uptimeSeconds: ref(0),
-					isSyncingContent: ref(false),
+					installProgressItems: ref<Archon.Websocket.v0.InstallProgressItem[]>([]),
+					installation: computed(() => null),
+					beginInstallation: () => {},
+					cancelOptimisticInstallation: () => {},
+					dismissInstallation: () => {},
 					busyReasons: computed(() => [
 						{ reason: defineMessage({ id: 's.bg', defaultMessage: 'Background task running' }) },
 					]),
diff --git a/packages/ui/src/utils/index.ts b/packages/ui/src/utils/index.ts
index 217dd867e4..6f5f7c977f 100644
--- a/packages/ui/src/utils/index.ts
+++ b/packages/ui/src/utils/index.ts
@@ -9,7 +9,6 @@ export * from './notices'
 export * from './project-types'
 export * from './savable'
 export * from './search'
-export * from './server-content-installing'
 export * from './server-search'
 export * from './tag-messages'
 export * from './truncate'
diff --git a/packages/ui/src/utils/server-content-installing.ts b/packages/ui/src/utils/server-content-installing.ts
deleted file mode 100644
index 9a4d5747bc..0000000000
--- a/packages/ui/src/utils/server-content-installing.ts
+++ /dev/null
@@ -1,203 +0,0 @@
-import type {
-	ContentCardProject,
-	ContentCardVersion,
-	ContentOwner,
-} from '../layouts/shared/content-tab/types'
-
-export type PendingServerContentInstallType = 'mod' | 'plugin' | 'datapack'
-type PendingServerContentOwner = Omit<ContentOwner, 'link'> & { link?: string }
-
-export interface PendingServerContentInstall {
-	projectId: string
-	versionId: string
-	contentType: PendingServerContentInstallType
-	title: ContentCardProject['title']
-	versionName?: ContentCardVersion['version_number'] | null
-	versionNumber?: ContentCardVersion['version_number'] | null
-	fileName?: ContentCardVersion['file_name'] | null
-	owner?: PendingServerContentOwner | null
-	slug?: ContentCardProject['slug'] | null
-	iconUrl?: ContentCardProject['icon_url'] | null
-	createdAt: number
-}
-
-interface PendingServerContentInstallBaseline {
-	contentKeys: string[]
-	projectIds?: string[]
-	createdAt: number
-}
-
-export const pendingServerContentInstallsEvent = 'modrinth:pending-server-content-installs'
-
-const stalePendingInstallAge = 30 * 60 * 1000
-
-function getPendingServerContentInstallsKey(serverId: string | null, worldId: string | null) {
-	if (!serverId || !worldId) return null
-	return `server-content-installing:${serverId}:${worldId}`
-}
-
-function getPendingServerContentInstallBaselineKey(
-	serverId: string | null,
-	worldId: string | null,
-) {
-	if (!serverId || !worldId) return null
-	return `server-content-installing-baseline:${serverId}:${worldId}`
-}
-
-function isPendingServerContentInstall(value: unknown): value is PendingServerContentInstall {
-	if (!value || typeof value !== 'object') return false
-	const record = value as Record<string, unknown>
-	return (
-		typeof record.projectId === 'string' &&
-		typeof record.versionId === 'string' &&
-		(record.contentType === 'mod' ||
-			record.contentType === 'plugin' ||
-			record.contentType === 'datapack') &&
-		typeof record.title === 'string' &&
-		typeof record.createdAt === 'number'
-	)
-}
-
-function isPendingServerContentInstallBaseline(
-	value: unknown,
-): value is PendingServerContentInstallBaseline {
-	if (!value || typeof value !== 'object') return false
-	const record = value as Record<string, unknown>
-	const contentKeys = record.contentKeys ?? record.projectIds
-	return (
-		Array.isArray(contentKeys) &&
-		contentKeys.every((contentKey) => typeof contentKey === 'string') &&
-		typeof record.createdAt === 'number'
-	)
-}
-
-function filterFreshPendingServerContentInstalls(items: PendingServerContentInstall[]) {
-	const cutoff = Date.now() - stalePendingInstallAge
-	return items.filter((item) => item.createdAt >= cutoff)
-}
-
-function isFreshPendingServerContentInstallBaseline(item: PendingServerContentInstallBaseline) {
-	return item.createdAt >= Date.now() - stalePendingInstallAge
-}
-
-function emitPendingServerContentInstallsChanged(serverId: string | null, worldId: string | null) {
-	if (typeof window === 'undefined') return
-	window.dispatchEvent(
-		new CustomEvent(pendingServerContentInstallsEvent, {
-			detail: { serverId, worldId },
-		}),
-	)
-}
-
-export function readPendingServerContentInstalls(serverId: string | null, worldId: string | null) {
-	const key = getPendingServerContentInstallsKey(serverId, worldId)
-	if (!key || typeof localStorage === 'undefined') return []
-
-	try {
-		const raw = localStorage.getItem(key)
-		if (!raw) return []
-		const parsed = JSON.parse(raw)
-		if (!Array.isArray(parsed)) return []
-		const freshItems = filterFreshPendingServerContentInstalls(
-			parsed.filter(isPendingServerContentInstall),
-		)
-		if (freshItems.length !== parsed.length) {
-			writePendingServerContentInstalls(serverId, worldId, freshItems)
-		}
-		return freshItems
-	} catch {
-		return []
-	}
-}
-
-export function writePendingServerContentInstalls(
-	serverId: string | null,
-	worldId: string | null,
-	items: PendingServerContentInstall[],
-) {
-	const key = getPendingServerContentInstallsKey(serverId, worldId)
-	if (!key || typeof localStorage === 'undefined') return
-
-	const freshItems = filterFreshPendingServerContentInstalls(items)
-	if (freshItems.length === 0) {
-		localStorage.removeItem(key)
-		const baselineKey = getPendingServerContentInstallBaselineKey(serverId, worldId)
-		if (baselineKey) {
-			localStorage.removeItem(baselineKey)
-		}
-	} else {
-		localStorage.setItem(key, JSON.stringify(freshItems))
-	}
-	emitPendingServerContentInstallsChanged(serverId, worldId)
-}
-
-export function readPendingServerContentInstallBaseline(
-	serverId: string | null,
-	worldId: string | null,
-) {
-	const key = getPendingServerContentInstallBaselineKey(serverId, worldId)
-	if (!key || typeof localStorage === 'undefined') return null
-
-	try {
-		const raw = localStorage.getItem(key)
-		if (!raw) return null
-		const parsed = JSON.parse(raw)
-		if (!isPendingServerContentInstallBaseline(parsed)) return null
-		if (!isFreshPendingServerContentInstallBaseline(parsed)) {
-			localStorage.removeItem(key)
-			return null
-		}
-		return new Set(parsed.contentKeys ?? parsed.projectIds)
-	} catch {
-		return null
-	}
-}
-
-export function writePendingServerContentInstallBaseline(
-	serverId: string | null,
-	worldId: string | null,
-	contentKeys: Iterable<string>,
-) {
-	const key = getPendingServerContentInstallBaselineKey(serverId, worldId)
-	if (!key || typeof localStorage === 'undefined') return
-
-	localStorage.setItem(
-		key,
-		JSON.stringify({
-			contentKeys: Array.from(new Set(contentKeys)),
-			createdAt: Date.now(),
-		} satisfies PendingServerContentInstallBaseline),
-	)
-	emitPendingServerContentInstallsChanged(serverId, worldId)
-}
-
-export function addPendingServerContentInstalls(
-	serverId: string | null,
-	worldId: string | null,
-	items: Omit<PendingServerContentInstall, 'createdAt'>[],
-) {
-	if (items.length === 0) return
-
-	const now = Date.now()
-	const next = new Map(
-		readPendingServerContentInstalls(serverId, worldId).map((item) => [item.projectId, item]),
-	)
-	for (const item of items) {
-		next.set(item.projectId, { ...item, createdAt: now })
-	}
-	writePendingServerContentInstalls(serverId, worldId, Array.from(next.values()))
-}
-
-export function removePendingServerContentInstall(
-	serverId: string | null,
-	worldId: string | null,
-	projectId: string,
-) {
-	writePendingServerContentInstalls(
-		serverId,
-		worldId,
-		readPendingServerContentInstalls(serverId, worldId).filter(
-			(item) => item.projectId !== projectId,
-		),
-	)
-}