diff --git a/packages/web-app-files/src/composables/actions/spaces/useSpaceActionsDuplicate.ts b/packages/web-app-files/src/composables/actions/spaces/useSpaceActionsDuplicate.ts
index f479d004dbd..0063c9d7f4d 100644
--- a/packages/web-app-files/src/composables/actions/spaces/useSpaceActionsDuplicate.ts
+++ b/packages/web-app-files/src/composables/actions/spaces/useSpaceActionsDuplicate.ts
@@ -25,7 +25,7 @@ export const useSpaceActionsDuplicate = () => {
   const sharesStore = useSharesStore()
   const { showMessage, showErrorMessage } = useMessages()
   const router = useRouter()
-  const { $gettext } = useGettext()
+  const { $gettext, $ngettext } = useGettext()
   const ability = useAbility()
   const clientService = useClientService()
   const loadingService = useLoadingService()
@@ -124,12 +124,28 @@ export const useSpaceActionsDuplicate = () => {
   }
 
   const handler = async ({ resources }: SpaceActionOptions) => {
+    const skippedSpaces: SpaceResource[] = []
     for (const resource of resources) {
-      if (resource.disabled || !isProjectSpaceResource(resource) || !isMemberSpace(resource)) {
+      if (resource.disabled || !isProjectSpaceResource(resource)) {
+        continue
+      }
+      if (!isMemberSpace(resource)) {
+        skippedSpaces.push(resource)
         continue
       }
       await duplicateSpace(resource)
     }
+
+    if (skippedSpaces.length) {
+      showErrorMessage({
+        title: $ngettext(
+          'Space »%{space}« could not be duplicated because you are not a member',
+          '%{count} spaces could not be duplicated because you are not a member',
+          skippedSpaces.length,
+          { space: skippedSpaces[0].name, count: skippedSpaces.length.toString() }
+        )
+      })
+    }
   }
 
   const actions = computed((): SpaceAction[] => [
diff --git a/packages/web-app-files/tests/unit/composables/actions/spaces/useSpaceActionsDuplicate.spec.ts b/packages/web-app-files/tests/unit/composables/actions/spaces/useSpaceActionsDuplicate.spec.ts
index 8ab88b67214..ffa91097289 100644
--- a/packages/web-app-files/tests/unit/composables/actions/spaces/useSpaceActionsDuplicate.spec.ts
+++ b/packages/web-app-files/tests/unit/composables/actions/spaces/useSpaceActionsDuplicate.spec.ts
@@ -172,6 +172,58 @@ describe('restore', () => {
         }
       })
     })
+    it('should show an error message for spaces the current user is no member of', async () => {
+      let instance: ReturnType<typeof useSpaceActionsDuplicate>
+      const { mocks } = getWrapper({
+        setup: (i) => {
+          instance = i
+        }
+      })
+      mocks.$clientService.graphAuthenticated.drives.createDrive.mockResolvedValue(
+        mock<SpaceResource>({ id: '3', name: 'Moon (1)' })
+      )
+      mocks.$clientService.webdav.listFiles.mockResolvedValue({ children: [] } as ListFilesResult)
+      const otherSpace = mock<SpaceResource>({
+        id: 'other',
+        name: 'Mars',
+        disabled: false,
+        driveType: 'project'
+      })
+      const memberSpace = mock<SpaceResource>({
+        id: '1',
+        name: 'Moon',
+        disabled: false,
+        driveType: 'project',
+        spaceImageData: null,
+        spaceReadmeData: null,
+        spaceQuota: { total: 1 }
+      })
+      await unref(instance.actions)[0].handler({ resources: [otherSpace, memberSpace] })
+      const { showMessage, showErrorMessage } = useMessages()
+      expect(showMessage).toHaveBeenCalledTimes(1)
+      expect(showErrorMessage).toHaveBeenCalledTimes(1)
+      expect(showErrorMessage).toHaveBeenCalledWith({
+        title: 'Space »Mars« could not be duplicated because you are not a member'
+      })
+    })
+    it('should show one error message with the count for several spaces the current user is no member of', async () => {
+      let instance: ReturnType<typeof useSpaceActionsDuplicate>
+      const { mocks } = getWrapper({
+        setup: (i) => {
+          instance = i
+        }
+      })
+      const otherSpaces = ['Mars', 'Venus'].map((name) =>
+        mock<SpaceResource>({ id: name, name, disabled: false, driveType: 'project' })
+      )
+      await unref(instance.actions)[0].handler({ resources: otherSpaces })
+      expect(mocks.$clientService.webdav.listFiles).not.toHaveBeenCalled()
+      const { showErrorMessage } = useMessages()
+      expect(showErrorMessage).toHaveBeenCalledTimes(1)
+      expect(showErrorMessage).toHaveBeenCalledWith({
+        title: '2 spaces could not be duplicated because you are not a member'
+      })
+    })
   })
   describe('method "duplicateSpace"', () => {
     it('should not create a space if the files of the space can not be read', () => {