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Microsoft is retiring its Windows Calendar, People, and Files companion apps on December 16, 2026. The change affects those quick-access apps—not the Microsoft 365 calendar, contacts, or files behind them. Microsoft says your information remains in Microsoft 365, where you can access it through other apps and services.

Which Microsoft apps are being retired?

The retirement covers three Microsoft 365 companion apps for Windows: Calendar, People, and Files. They provided an additional way to reach calendar information, people, and files, including taskbar-integrated quick access in Windows 11, as Windows Central reported.

These companions were available at no extra cost with eligible Microsoft 365 or Office 365 licenses. Microsoft’s announcement is about the companion apps, not the underlying calendar, contact, or file services.

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When will the apps stop working?

Microsoft’s scheduled retirement date is December 16, 2026. The apps may stop working earlier if an organization removes them from its devices before that date. Microsoft published its retirement guidance, last updated September 17, 2026, on Microsoft Learn.

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Will I lose files, meetings, or contacts?

No. Microsoft says the retirement does not delete your files, calendar events, or contacts. As Microsoft Learn puts it, “Your files, calendar events, and contacts live in your Microsoft 365 services, not in the companion apps.” You will need to use another Microsoft 365 or Windows experience to reach them.

What can I use instead of the companion apps?

Choose an alternative based on what you were trying to find or do:

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Task Alternatives Microsoft lists
Calendar information Outlook or Teams
People and contact information Outlook or Teams
Files on your device or across Microsoft 365 Windows Search, File Explorer, SharePoint, OneDrive, Word, Excel, PowerPoint, or other Microsoft 365 experiences
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The best route depends on where the information lives and which Microsoft 365 services your account can access. For files, Windows Search or File Explorer can help with local and familiar locations; SharePoint and OneDrive are options for content stored in those services.

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Do I need to do anything to remove the apps?

If you use an unmanaged Windows device, you can uninstall a companion app through Windows Settings or from Windows Search. Uninstalling any one of the three removes all three, according to Microsoft.

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  1. Open Settings > Apps > Installed apps.
  2. Find Calendar, People, or Files, then select Uninstall.

Alternatively, search Windows for Calendar, People, or Files, open the app’s menu, and choose Uninstall.

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What should administrators do?

On organization-managed devices, removing the app once may not be enough: an active deployment can install it again. Microsoft says the companions may have arrived through Microsoft 365 Apps updates, Intune or another software-distribution tool, or a user installation.

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  1. Check deployment assignments. In Intune, review whether the apps have Required or Available assignments. A Required assignment can reinstall an app after it is removed.
  2. Stop deployment routes. Microsoft says it will stop automatic installations through Microsoft 365 Apps updates. Administrators should also stop their own Intune or software-distribution deployments.
  3. Tell users what is changing. Explain the retirement date and point them to the appropriate Outlook, Teams, Windows, or Microsoft 365 alternative.
  4. Uninstall existing installations. Use Intune or the organization’s device-management tool after deployment routes are stopped.
  5. Monitor installation status. Check device or user install status until the apps have been removed.

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