A Windows security update bug has prevented some Windows 11 24H2 and 25H2 users from booting into their PCs, requiring them ...

Everyone knows you need to keep your operating system up to date, but what happens when a company botches the update and ...

Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...

Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.

Windows 11 runs into another disastrous bug with its latest update — Microsoft admits an 'issue in which devices are failing ...

Windows 11 KB5074109 (January 2026 Update) is causing major issues on some PCs, and Microsoft has more details to share.

Microsoft is investigating reports of serious boot failures affecting Windows 11 devices following the January 2026 security ...

Windows 11 KB5074109 is causing crashes, reboots, black screens, and BSOD errors for some users, but workaround is available.

Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...

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In a surprising turn of events, Microsoft has confirmed that its January 2026 security update, KB5074109, is causing significant boot issues for some Windows 11 users. This latest development ...