Summary
Microsoft 365 Companion Apps Retiring in December 2026
To Know: Microsoft is retiring the three Windows 11 Companion Apps: Microsoft 365 Calendar, People, and Files on December 16, 2026. ET&S will remove them from university-managed computers on December 1, 2026. You might be using them if you have Calendar, People, or Files icons on your Windows 11 taskbar that open a window showing your upcoming meetings, contacts, or recent files. If you do not recognize these apps, you are unlikely to be affected.
This change only impacts you if you currently use one of these companion apps. Retiring the apps will not impact any of your Microsoft 365 data, including files, contacts, or calendar events.
What to Use Instead
If you currently use a companion app, please use the following alternatives:
- Calendar → Outlook or Teams
- People → Outlook or Teams
- Files → OneDrive, SharePoint, File Explorer, or Windows Search
These existing Microsoft 365 and Windows applications provide access to the same information as the companion apps.
To Do: No action is required for most users.
Original Summary
Starting in late October 2025, Microsoft began automatically installing the Microsoft 365 Companion Apps - People, File Search, and Calendar - on Windows 11 devices that already had Microsoft 365 desktop client apps installed.
These lightweight apps are integrated directly into the Windows taskbar and are designed to help you work more efficiently by providing quick access to everyday tools - without needing to open full applications.
Key Features
Quick Access
- Instantly locate contacts, documents, and calendar events right from the taskbar - no app switching required.
Improved Productivity
- Pinning these apps makes it easier to collaborate, join meetings, and find important files, helping you stay focused and save time.
Customizable Experience
- You can choose which apps to keep on your taskbar, pin your favorites, and personalize your layout to match your workflow.
Availability
These apps are installed automatically on eligible Windows 11 devices. No action is required by users or IT staff.
Further Readings
For more details, visit Microsoft’s official support page:
👉 Get started with Microsoft 365 companions
Need additional help?
For assistance concerning site creation, content sharing, file synchronization, or other common SharePoint, OneDrive, Teams, or Office app activities, we recommend our Microsoft 365 Learning sites:
Learn more about the great tools our Microsoft 365 Learning sites offer!
Visit the Technology Help Desk Support page to locate your local campus contact information or to submit an online technology support request. For password issues you must call or visit the Help Desk in person.