diff --git a/package-lock.json b/package-lock.json
index ba55830f1..2ac66f36a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,7 @@
 				"@nextcloud/axios": "^2.5.1",
 				"@nextcloud/dialogs": "^7.1.0",
 				"@nextcloud/event-bus": "^3.3.3",
+				"@nextcloud/files": "^4.0.0-rc.1",
 				"@nextcloud/initial-state": "^3.0.0",
 				"@nextcloud/moment": "^1.3.5",
 				"@nextcloud/router": "^3.1.0",
@@ -2975,6 +2976,28 @@
 				"vue": "^3.2.0"
 			}
 		},
+		"node_modules/@nextcloud/dialogs/node_modules/@nextcloud/files": {
+			"version": "3.12.2",
+			"resolved": "https://registry.npmjs.org/@nextcloud/files/-/files-3.12.2.tgz",
+			"integrity": "sha512-vBo8tf3Xh6efiF8CrEo3pKj9AtvAF6RdDGO1XKL65IxV8+UUd9Uxl2lUExHlzoDRRczCqfGfaWfRRaFhYqce5Q==",
+			"license": "AGPL-3.0-or-later",
+			"dependencies": {
+				"@nextcloud/auth": "^2.5.3",
+				"@nextcloud/capabilities": "^1.2.1",
+				"@nextcloud/l10n": "^3.4.1",
+				"@nextcloud/logger": "^3.0.3",
+				"@nextcloud/paths": "^3.0.0",
+				"@nextcloud/router": "^3.1.0",
+				"@nextcloud/sharing": "^0.3.0",
+				"cancelable-promise": "^4.3.1",
+				"is-svg": "^6.1.0",
+				"typescript-event-target": "^1.1.1",
+				"webdav": "^5.8.0"
+			},
+			"engines": {
+				"node": "^20.0.0 || ^22.0.0 || ^24.0.0"
+			}
+		},
 		"node_modules/@nextcloud/dialogs/node_modules/@nextcloud/vue": {
 			"version": "9.4.0",
 			"resolved": "https://registry.npmjs.org/@nextcloud/vue/-/vue-9.4.0.tgz",
@@ -3382,9 +3405,9 @@
 			}
 		},
 		"node_modules/@nextcloud/files": {
-			"version": "3.12.2",
-			"resolved": "https://registry.npmjs.org/@nextcloud/files/-/files-3.12.2.tgz",
-			"integrity": "sha512-vBo8tf3Xh6efiF8CrEo3pKj9AtvAF6RdDGO1XKL65IxV8+UUd9Uxl2lUExHlzoDRRczCqfGfaWfRRaFhYqce5Q==",
+			"version": "4.0.0-rc.1",
+			"resolved": "https://registry.npmjs.org/@nextcloud/files/-/files-4.0.0-rc.1.tgz",
+			"integrity": "sha512-oJWg0UCAbPYBQBQ3BfKSCOzrCHFBp9LIpkZXo85WAvYniU0pJP9FHMdgh3BqAF0LVTd/E4F6wnlU7Au49IIwFA==",
 			"license": "AGPL-3.0-or-later",
 			"dependencies": {
 				"@nextcloud/auth": "^2.5.3",
@@ -3394,13 +3417,12 @@
 				"@nextcloud/paths": "^3.0.0",
 				"@nextcloud/router": "^3.1.0",
 				"@nextcloud/sharing": "^0.3.0",
-				"cancelable-promise": "^4.3.1",
 				"is-svg": "^6.1.0",
-				"typescript-event-target": "^1.1.1",
+				"typescript-event-target": "^1.1.2",
 				"webdav": "^5.8.0"
 			},
 			"engines": {
-				"node": "^20.0.0 || ^22.0.0 || ^24.0.0"
+				"node": "^24.0.0"
 			}
 		},
 		"node_modules/@nextcloud/initial-state": {
@@ -3491,6 +3513,29 @@
 				"@nextcloud/files": "^3.12.0"
 			}
 		},
+		"node_modules/@nextcloud/sharing/node_modules/@nextcloud/files": {
+			"version": "3.12.2",
+			"resolved": "https://registry.npmjs.org/@nextcloud/files/-/files-3.12.2.tgz",
+			"integrity": "sha512-vBo8tf3Xh6efiF8CrEo3pKj9AtvAF6RdDGO1XKL65IxV8+UUd9Uxl2lUExHlzoDRRczCqfGfaWfRRaFhYqce5Q==",
+			"license": "AGPL-3.0-or-later",
+			"optional": true,
+			"dependencies": {
+				"@nextcloud/auth": "^2.5.3",
+				"@nextcloud/capabilities": "^1.2.1",
+				"@nextcloud/l10n": "^3.4.1",
+				"@nextcloud/logger": "^3.0.3",
+				"@nextcloud/paths": "^3.0.0",
+				"@nextcloud/router": "^3.1.0",
+				"@nextcloud/sharing": "^0.3.0",
+				"cancelable-promise": "^4.3.1",
+				"is-svg": "^6.1.0",
+				"typescript-event-target": "^1.1.1",
+				"webdav": "^5.8.0"
+			},
+			"engines": {
+				"node": "^20.0.0 || ^22.0.0 || ^24.0.0"
+			}
+		},
 		"node_modules/@nextcloud/stylelint-config": {
 			"version": "3.2.1",
 			"resolved": "https://registry.npmjs.org/@nextcloud/stylelint-config/-/stylelint-config-3.2.1.tgz",
diff --git a/package.json b/package.json
index f25727af0..e5dc6a10a 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
 		"@nextcloud/axios": "^2.5.1",
 		"@nextcloud/dialogs": "^7.1.0",
 		"@nextcloud/event-bus": "^3.3.3",
+		"@nextcloud/files": "^4.0.0-rc.1",
 		"@nextcloud/initial-state": "^3.0.0",
 		"@nextcloud/moment": "^1.3.5",
 		"@nextcloud/router": "^3.1.0",
diff --git a/src/components/NoteItem.vue b/src/components/NoteItem.vue
index 252903e1e..af9c9aaa2 100644
--- a/src/components/NoteItem.vue
+++ b/src/components/NoteItem.vue
@@ -116,6 +116,7 @@ import { showError } from '@nextcloud/dialogs'
 import { setFavorite, setTitle, fetchNote, deleteNote, setCategory } from '../NotesService.js'
 import ShareVariantOutlineIcon from 'vue-material-design-icons/ShareVariantOutline.vue'
 import { emit, subscribe, unsubscribe } from '@nextcloud/event-bus'
+import { getSidebar } from '@nextcloud/files'
 
 export default {
 	name: 'NoteItem',
@@ -239,6 +240,7 @@ export default {
 			this.loading.favorite = true
 			setFavorite(this.note.id, !this.note.favorite)
 				.catch(() => {
+					this.loading.favorite = false
 				})
 				.then(() => {
 					this.loading.favorite = false
@@ -312,13 +314,28 @@ export default {
 			}
 		},
 		onToggleSharing() {
-			if (window?.OCA?.Files?.Sidebar?.setActiveTab) {
+			const sidebar = getSidebar()
+			if (!sidebar) {
+				showError(this.t('notes', 'Sharing not available.'))
+				return
+			}
+
+			try {
 				emit('toggle-navigation', { open: false })
 				setTimeout(() => {
 					window.dispatchEvent(new Event('resize'))
 				}, 200)
-				window.OCA.Files.Sidebar.setActiveTab('sharing')
-				window.OCA.Files.Sidebar.open(this.note.internalPath)
+				sidebar.open(this.note.internalPath)
+				setTimeout(() => {
+					try {
+						sidebar.setActiveTab('sharing')
+					} catch (e) {
+						console.warn('Could not activate sharing tab:', e.message)
+					}
+				}, 100)
+			} catch (error) {
+				console.error('Failed to open sidebar:', error)
+				showError(this.t('notes', 'Could not open the sharing sidebar.'))
 			}
 		},
 		async onShareCreated(event) {