Microsoft released an emergency update after the KB5079473 cumulative update caused Microsoft account sign-ins to fail across multiple apps, displaying a false “You’ll need the Internet…” error even when devices were online. Microsoft rolled out an optional out-of-band KB5085516 fix for Windows 11 25H2 and 24H2 devices, recommended installing the latest updates, and noted that Entra ID (Azure AD) sign-ins for businesses were not affected; a temporary restart workaround was also provided. #Microsoft #KB5079473 #KB5085516 #Windows11 #Teams #OneDrive #EntraID #SamsungGalaxyConnect
Keypoints
- Installing KB5079473 caused Microsoft account sign-in failures across multiple Microsoft apps with an incorrect “No Internet” error.
- Affected apps include Teams, OneDrive, Edge, Microsoft 365 Copilot, Excel, and Word for features requiring Microsoft account sign-in.
- Business environments using Entra ID (Azure AD) for authentication were not impacted by the bug.
- Microsoft released the optional out-of-band KB5085516 update (March 21, 2026) for Windows 11 25H2/24H2 as the fix and advised installing the latest updates.
- Microsoft also issued additional emergency updates for Bluetooth visibility, RRAS vulnerabilities, and guidance to fix C: drive access issues caused by Samsung Galaxy Connect.