Microsoft is ending the Microsoft 365 Companion app on Windows 11, which affects users who rely on the built-in Calendar, Contacts, and Files utilities. The service termination is scheduled for December 16, 2026, giving users ample time to adjust their workflows before the cutoff. This change matters because the app was pre-installed on many Windows 11 PCs, and its removal requires action from both enterprise administrators and individual users.
Microsoft 365 Companion app service termination affects Windows 11 users
The Companion app launched as a convenience feature bundled with Windows 11 updates starting in August 2023. It served as a central hub for three specific utilities: Calendar, Contacts, and Files. Microsoft is now phasing out the automatic installation of the app through standard Microsoft 365 updates. This shift signals a move away from bundling these standalone utilities directly into the operating system experience.
Enterprise administrators can manage the transition using Microsoft Intune to remove the app from managed devices before the final termination date. Unmanaged PCs require users to manually uninstall the application through Settings > Apps or by searching for it in Windows Search. The removal process is straightforward, but it demands user intervention for those who did not previously configure their systems for enterprise management.
User data remains safe during this transition because files, calendar entries, and contacts are stored in Microsoft 365 cloud services rather than locally within the Companion app. Removing the app will not delete any personal data. Users can continue to access their information through Outlook, Teams, OneDrive, SharePoint, and Windows Search after the app is gone.
We previously covered Microsoft Launches Xbox Mode for Windows 11 in our earlier Microsoft coverage, showing how the company continues to tweak the OS experience. The Companion app termination is a separate but related adjustment to the default Windows 11 software stack. Microsoft is streamlining the pre-installed software list to focus on core productivity tools and cloud services.
Microsoft will terminate the Microsoft 365 Companion app service on December 16, 2026. The app was automatically installed on Windows 11 PCs starting in August 2023. The Companion app bundled three utilities: Calendar, Contacts, and Files. Microsoft is phasing out the automatic installation feature via Microsoft 365 app updates. Administrators can use Microsoft Intune to remove the app from managed devices before the termination date. Unmanaged PCs require manual removal via Settings > Apps or Windows Search. User data (files, calendar, contacts) is stored in Microsoft 365 services and will not be deleted by removing the app. Access to data will continue via Outlook, Teams, OneDrive, SharePoint, and Windows Search.
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