Microsoft says it has resolved a Windows 11 bug that caused some commercial systems to fail to boot with an "UNMOUNTABLE_BOOT_VOLUME" error after installing recent security updates, with the fix ...

Microsoft is investigating reports of serious boot failures affecting Windows 11 devices following the January 2026 security updates. Users have reported encountering “UNMOUNTABLE_BOOT_VOLUME” errors, ...

Microsoft has issued its second emergency patch of the month. The new patch fixes a bug that affects cloud-based services. But another bug is preventing some Windows PCs from booting up. This year has ...

PCs are now failing to start. Just when you thought it was safe to update your PC and get back to work, there’s another warning about January’s mandatory security update. You’ll know if you’re ...

Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors after installing the January 2026 Patch Tuesday security updates.

The January update for Windows 11 has been met with considerable backlash, primarily due to reports of PCs refusing to shut down and displaying critical errors. A particularly alarming issue is the ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Microsoft is now under pressure, as the “nightmare” of January’s mandatory security updates ...

Microsoft is actively investigating the boot failure reports and working on potential fixes or additional workarounds. If you have downloaded the latest security updates from the January 2026 patch, ...

Microsoft's Windows 11 January 2026 Update woes continue, and now the company is confirming that some users are no longer able to boot their PCs, receiving the BSOD stop code "UNMOUNTABLE_BOOT_VOLUME" ...

Microsoft has confirmed that some users might find their PC unable to boot after installing the January 2026 security update released on January 13. This is on top of the plethora of other issues that ...

If you have downloaded January's KB5074109 Windows update and can't seem to get past boot, you aren't alone. As reported by Windows Latest, Microsoft has updated users in a support document that it is ...

Lucas is a writer and narrative designer from Argentina with over 15 years of experience writing for games and news. He keeps a watchful eye at the gaming world and loves to write about the hottest ...