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

Microsoft’s latest Windows 11 security update was meant to harden PCs against stealthy firmware attacks. Instead, it has triggered a fresh headache: some systems now refuse to power off properly, ...

A fresh wave of Windows 11 update trouble is making the rounds, and this one is about as disruptive as it gets: some PCs reportedly can’t boot after installing the latest January 2026 security update.

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

Microsoft pushed a flawed update for Windows 10 last week that traps some systems in an endless boot loop. The company is already working on a fix, but Windows Insiders had reported the problem before ...

Facepalm: Windows users who have encrypted their PCs with BitLocker might have trouble rebooting after installing a July OS update. Microsoft instructs those impacted to refer to the standard ...

Some machines are failing to start after security updates, prompting yet another Microsoft investigation Microsoft is ...

Windows 11 had a rough 2025. We tracked the top 20 Windows 11 issues reported by Windows Latest, from failed updates to ...

Microsoft's latest security update for Windows 11 has caused unexpected problems for users who run both Windows and Linux on the same computer. After installing the update, many users have reported ...

Windows 11 shutdown bug explained with causes, fixes, and workarounds to stop restarts, battery drain, and failed power-offs after updates.

Run Windows Update Troubleshooter Clear Windows Update cache Run Windows Update in Clean Boot State Manually install the update Reinstall Windows 11 using Windows Update Before you proceed, restart ...

Recently, Microsoft released a Windows update that accidentally crashed a wrecking ball into systems that dual-boot Linux. This wasn't supposed to happen but Linux users who dual-boot Linux and ...