Microsoft: March Windows updates break Teams, OneDrive sign-ins

Microsoft's March Windows 11 cumulative update (KB5079473) is causing Microsoft account sign-in failures across multiple apps (Teams, OneDrive, Edge, Office apps, and Microsoft 365 Copilot), with affected devices incorrectly reporting lack of Internet connectivity; Microsoft recommends restarting while connected as a temporary workaround and is developing a fix. The report also mentions out-of-band updates addressing a Bluetooth visibility issue and several RRAS security flaws, plus guidance for Samsung laptop app-related failures.