Microsoft to retire Microsoft 365 Companion apps in December

Microsoft announced that the Calendar, People, and Files Microsoft 365 companion apps will reach end of life on December 16, 2026, and will no longer function or be supported. The company has also stopped installing them via Microsoft 365 Apps updates and urged admins to remove them from managed devices.

• Calendar, People, and Files apps will stop working on December 16, 2026
• Microsoft has stopped installing them through Microsoft 365 Apps updates
• Admins are advised to remove the apps from their tenants
• The apps integrated Copilot and launched automatically at startup