Microsoft has acknowledged a new known issue in Windows 11 update KB5079473 that can block Microsoft account sign-ins in apps, including Teams Free, OneDrive, Edge, Word, and Excel. Microsoft has confirmed a new known issue affecting some PCs after the installation of the March 2026 Windows 11 cumulative update KB5079473. The company says some users may be unable to sign in with a Microsoft account, in several apps, after the up... [1643 chars]
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