A Windows update from December 2025 is breaking systems for some users. The update can corrupt drives and stop Windows from booting. Microsoft is looking into it.

Exact Error Message:

The update leads to drive corruption preventing boot; users advised to report to Microsoft.

Why This Error Happens

The problem starts when a system update contains bad drivers or makes wrong changes to disk structures during installation. If the update process breaks or applies changes incorrectly, it can damage boot files or the partition table. Windows Boot Manager then can't find the files it needs, leading to black screens, boot loops, or "inaccessible boot device" errors.

Current Status: Tracking

Microsoft hasn't released a fix or recovery tool yet, but they know about the problem and are gathering data. We're watching the situation and will update this post with new information.

What to Do If Affected:

  • Report to Microsoft: Report the issue through official channels to help Microsoft fix it faster.
  • Use the Feedback Hub app in Windows (if you can access it from another device or recovery mode)
  • Business users with support contracts should open a ticket
  • Don't Try Risky Fixes: Skip running disk repair commands like chkdsk /f or chkdsk /r unless a professional tells you to. These can make things worse if your drive has logical corruption.
  • Secure Your Data (Priority): If you have important files and no backup, stop trying to boot Windows. More attempts could wreck your data. Remove the drive, connect it to a working computer with a USB adapter, and copy your files first.
  • Boot into Recovery Environment: If you can get to Windows Recovery (try F11 or F8 at startup), you might fix it with system restore.
  • Go to Troubleshoot > Advanced Options > System Restore
  • Wait for Microsoft: They'll probably release a fix through Windows Update, the Update Catalog, or their support site. We'll update this post when there's a real solution.

How We Can Help

Our managed clients get protected with system monitoring and backup points that prevent these problems. If your business in Seattle or Tacoma hits this or any system failure, our managed IT services include monitoring and fast response.

For other Windows problems, check our guides on fixing printer error 0x0000011b or printer error 0x00000709. See all our Windows fixes for more help.

We'll update this post when Microsoft releases a fix or we confirm a reliable solution.

Need help with this update or other system problems? Don't risk losing your data. Contact us for expert Seattle IT support or Tacoma IT support.