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 ...
Windows Latest

Microsoft suspects some PCs might not boot after Windows 11 January 2026 Update (KB5074109)

Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...
XDA Developers on MSN

Microsoft confirms that a stack of bad Windows updates is causing boot issues

It's not just January's one.

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 ...
Ars Technica

System won't boot: UNMOUNTABLE_BOOT_VOLUME STOP error

I've got an interesting problem... my laptop (running XP SP3) is giving me a BSOD while it's booting. The pertinent information from the BSO <BR><BR>UNMOUNTABLE_BOOT_VOLUME, STOP 0x000000ED ...

Microsoft issues second emergency patch for Windows this month - update your PC today

Microsoft issues second emergency patch for Windows this month - update your PC today ...