Microsoft Issues Emergency Windows 11 Update for Installation Failure Loop

Microsoft released an out-of-band Windows 11 update, KB5086672, to fix a widespread installation failure affecting versions 25H2 and 24H2 after the March preview update KB5079391 triggered repeated setup errors. Affected systems entered a loop of failed update attempts and reported error code 0x80073712, which indicates missing or corrupted update files. Microsoft withdrew the faulty preview release and replaced it with a cumulative package that also carries forward March security and quality fixes.

The emergency package moves impacted devices to OS builds 26200.8117 and 26100.8117 and also updates several local AI components. Microsoft said the fix is available through Windows Update, the Microsoft Update Catalog, and manual installation in Settings, while enterprise administrators can accelerate deployment through Intune or Windows Autopatch expedited quality updates. Because the release combines the servicing stack and cumulative update, rollback options are limited and manual removal may require DISM.