Microsoft investigates Windows 11 boot failures after January updates

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

'Devices are failing to boot': Why the latest Windows 11 bug could cause Microsoft more grief

Windows 11 runs into another disastrous bug with its latest update — Microsoft admits an 'issue in which devices are failing ...

Microsoft links Windows 11 boot failures to failed December 2025 update

Microsoft has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously failed attempts to install the December 2025 security update, which left systems ...
ZDNet

Windows 11 is getting a secret weapon for boot failures - how it works

Have you ever run into trouble trying to boot up your Windows PC? Boot-up errors are among the most challenging to troubleshoot and fix. Now, Microsoft is launching a new tool that will step in when ...