Microsoft released August 2023 preview updates for Windows 11 and Windows 10 systems this week, but unfortunately, some users are experiencing blue screens with errors related to an unsupported processor issue. The specific updates causing the issue are KB5029351 for Windows 11 and KB5029331 for Windows 10. These updates include fixes for the Search app and the introduction of a new Backup app. Microsoft has acknowledged the problem and stated that the updates may automatically uninstall to allow Windows to start up properly. Some users have already reported that the faulty updates were rolled back after several reboots. Microsoft is currently investigating the issue to determine the cause. In the meantime, users encountering the blue screen errors are encouraged to file a report through the Feedback Hub. Microsoft has also introduced a new policy for Windows 11 that gives administrators better control over the delivery of monthly non-security preview updates on enterprise devices. Users can now choose between automatic installation or manual selection of optional updates.
https://www.bleepingcomputer.com/news/microsoft/new-windows-updates-cause-unsupported-processor-blue-screens/