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MS Update Kills Microsoft Account Sign-Ins in Windows 11

The update KB5079473 causes Microsoft account sign-in failures in multiple apps, affecting Windows 11 versions 25H2 and 24H2 users, while Entra ID authentication remains unaffected.

Summary by The Register
OneDrive, Office, Teams Free users greeted with phantom 'no internet' errors, restart may help if you're lucky Microsoft has broken account sign-ins in Windows 11 25H2 and 24H2 with a recent update, causing error messages in apps like OneDrive and Office.…

5 Articles

Windows 11 users are faced with a login problem after installing the cumulative update KB5079473, which was released on Patch Day March. Systems with 24H2 and 25H2 versions are affected. (Continue reading)

Microsoft returns a recently known failure of apps and services with private accounts to the March patchday Windows updates.

·Germany
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The Redmond-based company is once again under fire for its buggy updates. March's Patch Tuesday update prevents several Microsoft applications that come pre-installed on Windows 11 from working.

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BleepingComputer broke the news in on Friday, March 20, 2026.
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