diff --git a/next-ui/src/colada/queries/actuator-info.test.ts b/next-ui/src/colada/queries/actuator-info.test.ts
index 9a0b2c1d..ff436441 100644
--- a/next-ui/src/colada/queries/actuator-info.test.ts
+++ b/next-ui/src/colada/queries/actuator-info.test.ts
@@ -1,14 +1,21 @@
-import { afterAll, afterEach, beforeAll, expect, test } from 'vitest'
+import { afterAll, afterEach, beforeAll, beforeEach, expect, test } from 'vitest'
 import { server } from '@/mocks/api/node'
 import { useActuatorInfo } from '@/colada/queries/actuator-info'
-import { mockPiniaColada } from '@/mocks/pinia-colada'
+import { createMockColada } from '@/mocks/pinia-colada'
+import { http, HttpResponse } from 'msw'
+import { baseUrl } from '@/mocks/api/handlers/base'
+import { VueWrapper } from '@vue/test-utils'
 
+let mock: VueWrapper
 beforeAll(() => server.listen())
-afterEach(() => server.resetHandlers())
-afterAll(() => {
-  server.close()
-  mockPiniaColada.unmount()
+beforeEach(() => {
+  mock = createMockColada()
 })
+afterEach(() => {
+  server.resetHandlers()
+  mock.unmount()
+})
+afterAll(() => server.close())
 
 test('when getting actuator-info then values are correct', async () => {
   const { buildVersion, commitId, refresh } = useActuatorInfo()
@@ -17,3 +24,17 @@ test('when getting actuator-info then values are correct', async () => {
   expect(buildVersion.value).toBe('9.9.9')
   expect(commitId.value).toBe('ABC123')
 })
+
+test('when failing to get actuator-info then values are undefined', async () => {
+  server.use(
+    http.get(baseUrl + 'actuator/info', () => {
+      return HttpResponse.json({ error: 'Unauthorized' }, { status: 401 })
+    }),
+  )
+
+  const { buildVersion, commitId, refresh } = useActuatorInfo()
+
+  await refresh()
+  expect(buildVersion.value).toBeUndefined()
+  expect(commitId.value).toBeUndefined()
+})
diff --git a/next-ui/src/colada/queries/announcements.test.ts b/next-ui/src/colada/queries/announcements.test.ts
index 1983eb0a..86fd56de 100644
--- a/next-ui/src/colada/queries/announcements.test.ts
+++ b/next-ui/src/colada/queries/announcements.test.ts
@@ -1,14 +1,19 @@
-import { afterAll, afterEach, beforeAll, expect, test } from 'vitest'
+import { afterAll, afterEach, beforeAll, beforeEach, expect, test } from 'vitest'
 import { server } from '@/mocks/api/node'
-import { mockPiniaColada } from '@/mocks/pinia-colada'
+import { createMockColada } from '@/mocks/pinia-colada'
 import { useAnnouncements } from '@/colada/queries/announcements'
+import { VueWrapper } from '@vue/test-utils'
 
+let mock: VueWrapper
 beforeAll(() => server.listen())
-afterEach(() => server.resetHandlers())
-afterAll(() => {
-  server.close()
-  mockPiniaColada.unmount()
+beforeEach(() => {
+  mock = createMockColada()
 })
+afterEach(() => {
+  server.resetHandlers()
+  mock.unmount()
+})
+afterAll(() => server.close())
 
 test('when getting announcements then values are correct', async () => {
   const { unreadCount, refresh } = useAnnouncements()
diff --git a/next-ui/src/colada/queries/app-releases.test.ts b/next-ui/src/colada/queries/app-releases.test.ts
index 80be7f03..5a0df62a 100644
--- a/next-ui/src/colada/queries/app-releases.test.ts
+++ b/next-ui/src/colada/queries/app-releases.test.ts
@@ -1,14 +1,19 @@
-import { afterAll, afterEach, beforeAll, expect, test } from 'vitest'
+import { afterAll, afterEach, beforeAll, beforeEach, expect, test } from 'vitest'
 import { server } from '@/mocks/api/node'
-import { mockPiniaColada } from '@/mocks/pinia-colada'
+import { createMockColada } from '@/mocks/pinia-colada'
 import { useAppReleases } from '@/colada/queries/app-releases'
+import { VueWrapper } from '@vue/test-utils'
 
+let mock: VueWrapper
 beforeAll(() => server.listen())
-afterEach(() => server.resetHandlers())
-afterAll(() => {
-  server.close()
-  mockPiniaColada.unmount()
+beforeEach(() => {
+  mock = createMockColada()
 })
+afterEach(() => {
+  server.resetHandlers()
+  mock.unmount()
+})
+afterAll(() => server.close())
 
 test('when getting app releases then values are correct', async () => {
   const { latestRelease, isLatestVersion, refresh } = useAppReleases()
diff --git a/next-ui/src/mocks/api/handlers/actuator.ts b/next-ui/src/mocks/api/handlers/actuator.ts
index f518f21c..877323b6 100644
--- a/next-ui/src/mocks/api/handlers/actuator.ts
+++ b/next-ui/src/mocks/api/handlers/actuator.ts
@@ -1,43 +1,45 @@
 import { http, HttpResponse } from 'msw'
 import { baseUrl } from '@/mocks/api/handlers/base'
 
+export const actuatorResponseOk = {
+  git: {
+    branch: 'master',
+    commit: {
+      id: 'ABC123',
+      time: '2025-05-16T03:26:50Z',
+    },
+  },
+  build: {
+    artifact: 'komga',
+    name: 'komga',
+    version: '9.9.9',
+    group: 'komga',
+  },
+  java: {
+    version: '23.0.2',
+    vendor: {
+      name: 'Eclipse Adoptium',
+      version: 'Temurin-23.0.2+7',
+    },
+    runtime: {
+      name: 'OpenJDK Runtime Environment',
+      version: '23.0.2+7',
+    },
+    jvm: {
+      name: 'OpenJDK 64-Bit Server VM',
+      vendor: 'Eclipse Adoptium',
+      version: '23.0.2+7',
+    },
+  },
+  os: {
+    name: 'Linux',
+    version: '6.8.0-57-generic',
+    arch: 'amd64',
+  },
+}
+
 export const actuatorHandlers = [
   http.get(baseUrl + 'actuator/info', () => {
-    return HttpResponse.json({
-      git: {
-        branch: 'master',
-        commit: {
-          id: 'ABC123',
-          time: '2025-05-16T03:26:50Z',
-        },
-      },
-      build: {
-        artifact: 'komga',
-        name: 'komga',
-        version: '9.9.9',
-        group: 'komga',
-      },
-      java: {
-        version: '23.0.2',
-        vendor: {
-          name: 'Eclipse Adoptium',
-          version: 'Temurin-23.0.2+7',
-        },
-        runtime: {
-          name: 'OpenJDK Runtime Environment',
-          version: '23.0.2+7',
-        },
-        jvm: {
-          name: 'OpenJDK 64-Bit Server VM',
-          vendor: 'Eclipse Adoptium',
-          version: '23.0.2+7',
-        },
-      },
-      os: {
-        name: 'Linux',
-        version: '6.8.0-57-generic',
-        arch: 'amd64',
-      },
-    })
+    return HttpResponse.json(actuatorResponseOk)
   }),
 ]
diff --git a/next-ui/src/mocks/api/handlers/base.ts b/next-ui/src/mocks/api/handlers/base.ts
index 0b4acb4b..c48ec99c 100644
--- a/next-ui/src/mocks/api/handlers/base.ts
+++ b/next-ui/src/mocks/api/handlers/base.ts
@@ -1 +1,6 @@
+import { HttpResponse } from 'msw'
+
 export const baseUrl = import.meta.env.VITE_KOMGA_API_URL + '/'
+
+export const response401Unauthorized = () =>
+  HttpResponse.json({ error: 'Unauthorized' }, { status: 401 })
diff --git a/next-ui/src/mocks/api/handlers/releases.ts b/next-ui/src/mocks/api/handlers/releases.ts
index 51e0d1ea..8731b0a2 100644
--- a/next-ui/src/mocks/api/handlers/releases.ts
+++ b/next-ui/src/mocks/api/handlers/releases.ts
@@ -1,33 +1,46 @@
 import { http, HttpResponse } from 'msw'
 import { baseUrl } from '@/mocks/api/handlers/base'
 
+export const releasesResponseOk = [
+  {
+    version: '9.9.9',
+    releaseDate: '2025-05-16T04:31:05Z',
+    url: 'https://github.com/gotson/komga/releases/tag/1.21.3',
+    latest: true,
+    preRelease: false,
+    description: 'Truncated',
+  },
+  {
+    version: '1.21.2',
+    releaseDate: '2025-03-12T04:19:30Z',
+    url: 'https://github.com/gotson/komga/releases/tag/1.21.2',
+    latest: false,
+    preRelease: false,
+    description: 'Truncated',
+  },
+  {
+    version: '1.21.1',
+    releaseDate: '2025-03-06T07:31:00Z',
+    url: 'https://github.com/gotson/komga/releases/tag/1.21.1',
+    latest: false,
+    preRelease: false,
+    description: 'Truncated',
+  },
+]
+
+export const releasesResponseOkNotLatest = [
+  {
+    version: '9.9.9',
+    releaseDate: '2025-05-16T04:31:05Z',
+    url: 'https://github.com/gotson/komga/releases/tag/1.21.3',
+    latest: false,
+    preRelease: false,
+    description: 'Truncated',
+  },
+]
+
 export const releasesHandlers = [
   http.get(baseUrl + 'api/v1/releases', () => {
-    return HttpResponse.json([
-      {
-        version: '9.9.9',
-        releaseDate: '2025-05-16T04:31:05Z',
-        url: 'https://github.com/gotson/komga/releases/tag/1.21.3',
-        latest: true,
-        preRelease: false,
-        description: 'Truncated',
-      },
-      {
-        version: '1.21.2',
-        releaseDate: '2025-03-12T04:19:30Z',
-        url: 'https://github.com/gotson/komga/releases/tag/1.21.2',
-        latest: false,
-        preRelease: false,
-        description: 'Truncated',
-      },
-      {
-        version: '1.21.1',
-        releaseDate: '2025-03-06T07:31:00Z',
-        url: 'https://github.com/gotson/komga/releases/tag/1.21.1',
-        latest: false,
-        preRelease: false,
-        description: 'Truncated',
-      },
-    ])
+    return HttpResponse.json(releasesResponseOk)
   }),
 ]
diff --git a/next-ui/src/mocks/pinia-colada.ts b/next-ui/src/mocks/pinia-colada.ts
index 4df2b984..3bfa6ef6 100644
--- a/next-ui/src/mocks/pinia-colada.ts
+++ b/next-ui/src/mocks/pinia-colada.ts
@@ -6,9 +6,9 @@ const DummyComponent = {
   template: '<p></p>',
 }
 
-const pinia = createPinia()
-export const mockPiniaColada = mount(DummyComponent, {
-  global: {
-    plugins: [pinia, [PiniaColada, {}]],
-  },
-})
+export const createMockColada = () =>
+  mount(DummyComponent, {
+    global: {
+      plugins: [createPinia(), [PiniaColada, {}]],
+    },
+  })