Microsoft released an out-of-band update for Windows 11 (KB5085516) on March 21, 2026, to address a sign-in regression introduced by the March 10 cumulative update (KB5079473). Affected users reported being unable to authenticate into apps using personal Microsoft accounts: despite an active internet connection, the sign-in flow incorrectly displayed a “no Internet” error and blocked access to Microsoft services such
Tag: KB5079473
KB5079473 Chaos: How a Windows 11 Patch Locked Out Teams, OneDrive and Personal Accounts
A routine March cumulative update meant to keep Windows secure instead produced a glaring user-impacting regression. After Microsoft pushed KB5079473 (OS Build 26100.8037) on March 10, a subset of Windows 11 devices began failing to sign in to consumer Microsoft services. The result: personal OneDrive syncs stopped working, Microsoft Teams Free users could not authenticate, and Office features tied to
March 10, 2026 — KB5079473 for Windows 11 (OS Builds 26200.8037 and 26100.8037)
Microsoft released KB5079473 on March 10, 2026. The update is identified by the OS builds 26200.8037 and 26100.8037 and appears on Microsoft’s support site as a cumulative update for Windows 11. What the entry shows KB identifier and date: The article is titled “March 10, 2026 — KB5079473 (OS Builds 26200.8037 and 26100.8037)” and is published on Microsoft’s official support