Microsoft Is Pulling Three Apps You Probably Forgot You Had
Microsoft announced it will retire the Calendar, People, and Files Microsoft 365 companion apps on December 16, 2026. After that date, the apps stop working entirely and won’t receive any support. If you’re running managed Windows 11 devices in your business, this is an action item, not a heads-up.
For most small and mid-size businesses, the honest answer is: these apps probably aren’t critical to your workflow. But the cleanup still matters. Dead apps sitting on managed endpoints create confusion for users and clutter for IT. The bigger issue is who’s responsible for removing them, and the answer is you, not Microsoft.
What These Apps Actually Were
Microsoft started automatically installing these three apps on Windows 11 enterprise devices roughly a year before announcing their retirement. They pinned to the taskbar, launched at startup by default, and pulled in Copilot for contextual AI assistance. The idea was to let users check their schedule, find colleagues, and locate files without switching between apps.
It’s a reasonable concept. The execution was messier. Microsoft pushed them onto devices without being asked, and now that they’re being shut down, Microsoft is asking administrators and users to remove the apps themselves. Microsoft has already stopped installing them through Microsoft 365 Apps updates, but it won’t automatically uninstall them from existing devices.
What Admins Need to Do Before December 16
The split in responsibility depends on whether a device is managed or unmanaged.
- Managed devices: Administrators must remove the Calendar, People, and Files companion apps from all devices in their tenant before December 16, 2026. Tools like Intune make this straightforward with a targeted uninstall policy.
- Unmanaged devices: Microsoft won’t remove the apps automatically. Individual users need to uninstall them manually before the deadline.
If you’re running Intune, this is a good time to audit what’s actually deployed across your endpoints. Apps that were auto-installed over the past year sometimes slip through inventory reviews. A quick device compliance check will show you where these companion apps still live.
Microsoft also noted in the same message center update that administrators should migrate Entra ID users to phishing-resistant sign-in methods, including passkeys, QR code authentication, or FIDO2 security keys. SMS as a first-factor sign-in method is being retired starting February 2027. That’s a separate but related cleanup worth scheduling now while you’re already in the admin center.
No Replacement Is Coming
Microsoft hasn’t announced any replacement for the taskbar-integrated features these apps provided. If your users were actually relying on the companion apps to manage their calendar or find contacts quickly, they’ll need to go back to Outlook or Teams for that. For most organizations, that’s already where those workflows live anyway.
This retirement is also a good reminder that auto-installed Microsoft apps deserve the same scrutiny as anything else on your endpoints. The Microsoft 365 Store version support changes earlier this year followed a similar pattern: Microsoft shifts direction, gives a deadline, and leaves the uninstall work to admins. Staying ahead of these changes is easier when someone’s actually watching the Microsoft 365 message center on your behalf.
If you’re also working through the Windows 10 end-of-support transition, the device audit you need for that overlaps directly with what’s required here. One review, two problems addressed.
Get the companion apps removed before December 16, 2026, check your unmanaged devices, and add the Entra ID sign-in migration to your Q4 IT checklist. If you want a second set of eyes on your Microsoft 365 tenant before the deadline, booking an IT assessment with Exine is a good place to start.
FAQ
Will Microsoft automatically remove the Calendar, People, and Files apps from my devices?
No. Microsoft stopped installing the companion apps through Microsoft 365 Apps updates, but it won’t uninstall them from existing devices. Administrators must remove them from managed devices, and users must uninstall them manually from unmanaged devices, before December 16, 2026.
What happens if I don’t remove the Microsoft 365 companion apps before December 16?
The apps will stop functioning entirely after December 16, 2026. Microsoft will no longer support them. They’ll sit broken on your devices until someone removes them, which creates a poor experience for users and adds unnecessary clutter to your endpoints.
Is there a replacement for the Microsoft 365 Calendar, People, and Files companion apps?
Microsoft hasn’t announced a replacement for the taskbar-integrated features these apps provided. Calendar, contacts, and file access remain available through Outlook, Teams, and File Explorer, which is where most users were doing that work anyway.
How do I remove the companion apps from managed devices?
If you’re using Intune, you can push an uninstall policy targeting the Calendar, People, and Files apps across your tenant. Admins should also audit device inventories now to confirm where the apps are still installed before the December 16, 2026 deadline.
