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A recent update for Windows 11 may cause a blue screen of death for users. Microsoft is investigating the possible cause and does not yet have a final fix.

The Windows 11 KB5029351 update released this week is causing a blue screen of death for several users. More specifically, the updated code causes an ‘UNSUPPORTED_PROCESSOR’ error when the affected system reboots after the update.

According to comments on Reddit, the error is most commonly found on Windows 11 systems with MSI motherboards and Intel processors. Especially MSI motherboards that have the latest BIOS version appear to be vulnerable. Microsoft has since admitted the problem.

BIOS update MSI motherboards

More specifically, it would be an error surrounding a BIOS update for the MSI Z690 and Z790 motherboards introduced in July this year. The update was supposed to make them compatible with the latest 14th generation Intel processors.

Microsoft working on fix

Microsoft has indicated it is investigating the problem and working hard on a fix. The tech giant further indicated that Windows 11 will automatically reset to the previous version by restarting a device several times. After that, users would be able to boot their systems normally.

Rolling back the latest BIOS version for the MSI motherboards would also help undo the problem.

Also read: Windows 11 23H2 is on its way: what’s new?