Microsoft Ditches Companion Apps for Microsoft 365

Microsoft is shutting down its Microsoft 365 companion apps for good. The Calendar, People, and Files apps will stop working on December 16, and the company wants IT teams to remove them before that.

The three apps were designed to save clicks. Calendar showed upcoming meetings, while People helped locate colleagues and view reporting lines inside a company. Files pulled up recent documents from OneDrive and Microsoft 365 without opening the app.

Copilot powered the apps behind the scenes and even offered contextual AI help along with basic lookup tools.

The rollout started back in October 2025, when Microsoft started auto-installing the trio on Windows 11 machines running the full Microsoft 365 desktop suite. That push had wrapped up by the end of last year, putting the apps on taskbars across enterprise fleets worldwide.