Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.
Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...
Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...
Another week, another big Windows problem.
Microsoft released unplanned updates over the weekend. They correct errors in the January patches and bring new boot certificates.
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Microsoft has started rolling out new Secure Boot certificates that will automatically install on eligible Windows 11 24H2 ...
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