Many Windows 11 users have reported that the recent update has unexpectedly removed the Copilot app from their PCs. Microsoft confirmed the issue, specifically linked to OS Build 26100.3476, and is currently developing a fix. The problem pertains solely to the Copilot app, not the Microsoft 365 version. Users can reinstall the app from the Microsoft Store if needed. Microsoft rebranded its Bing AI to Copilot, which is now integrated across its products. Despite privacy concerns over its data handling, Microsoft reassures users that stored information remains local.