Overview
- Microsoft released an optional cumulative update that restores sign-ins for personal Microsoft accounts in Windows 11 apps.
- The update does not install by itself and must be started in Windows Update or downloaded from the Microsoft Update Catalog.
- Installing the patch moves Windows 11 to build 26100.8039 on version 24H2 or 26200.8039 on version 25H2.
- Users affected by the bug saw false messages that the device was offline even though the internet connection worked.
- The failures hit apps like Teams Free, OneDrive, Excel, Word, Edge, and Microsoft 365 Copilot, while Entra‑ID enterprise accounts were not affected.