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

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

It's not just January's one.

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

Can’t boot Windows using a USB drive? If yes, you have come to the correct page. In this post, we will help you find a working fix for boot issues with USB. To boot Windows using USB, you first need ...

When Windows won’t boot up, it can be a disturbing experience. But that moment passes quickly, and you must decide how to get past this (hopefully) temporary hiccup. Fortunately, there are plenty of ...

Microsoft released unplanned updates over the weekend. They correct errors in the January patches and bring new boot certificates.

Microsoft is kicking off this week with a duo of new Windows 11 preview builds. Those in the Dev Channel received build 26200.5622 (KB5058512), which introduces several improvements and new features, ...