Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.
Round and round we go.
The Register on MSN
Microsoft probes Windows 11 boot failures tied to January security updates
Some machines are failing to start after security updates, prompting yet another Microsoft investigation Microsoft is investigating reports that its January 2026 security updates are leaving some ...
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 ...
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 ...
Fast Startup is failing due to underlying system inconsistencies, such as corrupted hibernation files, misconfigured BIOS settings, or outdated drivers, which disrupt the boot optimization process.
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 ...
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