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

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

It's not just January's one.

This comes just hours after reports that another emergency update has been issued by Microsoft to affect other problems ...

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

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

Another week, another big Windows problem.

Microsoft issues second emergency patch for Windows this month - update your PC today ...

Dealing with the "Your PC did not start correctly" error on a Windows 10 or 11 computer can be quite troublesome. This error usually pops up when you try to boot your ...

Microsoft is shifting focus to fixing Windows 11 performance and reliability after months of buggy updates, boot failures, and growing user frustration.

A computer that refuses to start is one of the most frustrating technical problems, whether it's a desktop PC or a laptop. This issue can arise from simple power interruptions, loose connections, or ...