The feature was removed starting with Windows 8 and is not available in Windows 10 or Windows 11 .

: In the Advanced options, select Startup Settings , and then click Restart .

Navigate to > Advanced options > System Restore .

Microsoft replaced it with and System Restore .

The Last Known Good Configuration is a feature in Windows that allows users to boot their system using the last known good set of drivers and system settings. When a user logs on to Windows, the operating system creates a copy of the current configuration, which includes information about the system's hardware, device drivers, and system settings. If a problem occurs, such as a failed driver update or a misconfigured system setting, the LKGC can be used to revert to a previous working configuration.

When a user selects the Last Known Good Configuration option from the Advanced Boot Options menu, Windows loads the previously saved configuration. This configuration is stored in the Windows Registry and is updated each time the system boots successfully. By loading the last known good configuration, Windows essentially "reverts" to a previous state, replacing the current configuration with the one that was known to work.

The "Last Known Good Configuration" (LKGC) feature, once a staple for fixing boot issues in older versions of Windows like Windows 7, has been officially removed from Windows 11. Microsoft Learn +1 While the term no longer appears as a dedicated menu option, Windows 11 uses more advanced automated recovery tools and manual features to achieve the same result: restoring your PC to a state where it worked properly. Why was it removed? LKGC only backed up a specific part of the registry (the