Microsoft fixed a recent bug in the Windows 11 operating system that was causing the screen to flicker in safe mode without support for network drivers. In some cases, it also broke some services like Explorer or Start menu. According to available data, the issue applies to devices with Windows 11 (21H2) with an optional bulk message KB5012643.

“Devices experiencing this issue may log a system error in the Windows event log with the Winlogon source and the following description: The shell crashed unexpectedly and explorer.exe restarted,” Microsoft said in a statement.

According to the source, Microsoft fixed the issue with its Undo Known Issues (KIR) tool, which allows you to remotely disable problematic non-security fixes available through Windows Update. The fix is ​​expected to be automatically applied to all user and unmanaged work devices within 24 hours.

You can speed up this process by restarting the problematic device. If you need to deploy this hotfix on enterprise-run devices, network administrators need to set up and configure KIR Group Policy accordingly. Source