New
#60
This is an additional method to perform a system restore after a system restore failure with stop error: 0xc000021a
Disable driver signature enforcement
How to Enable or Disable Driver Signature Enforcement in Windows 10
https://learn.microsoft.com/en-gb/wi...restore-points
Code:Known issue: You cannot restore the system to a restore point after you install a Windows 10 update Consider the following scenario: You install Windows 10 on a clean computer. You turn on system protection, and then create a system restore point that is named "R1." You install one or more Windows 10 updates. After the updates finish installing, you restore the system to the "R1" restore point. In this scenario, the system is not restored to the "R1" restore point. Instead, the computer experiences a Stop error (0xc000021a). You restart the computer, but the system cannot return to the Windows desktop. Cause This is a known issue in Windows 10. During the system restore process, Windows temporarily stages the restoration of files that are in use. It then saves the information in the registry. When the computer restarts, it completes the staged operation. In this situation, Windows restores the catalog files and stages the driver (.sys) files to be restored when the computer restarts. However, when the computer restarts, Windows loads the existing drivers before it restores the later versions of the drivers. Because the driver versions do not match the versions of the restored catalog files, the restart process stops.
Code:Workaround To recover from the failed restart and continue the restore process After the failure occurs, restart the computer until it enters the Windows Recovery Environment (WinRE). To do this, you may have to use a hardware restart switch, and you may have to restart multiple times. In the Windows Recovery Environment: Select Troubleshoot > Advanced options > More recovery options > Startup settings, and then select Restart now. In the list of startup settings, select Disable driver signature enforcement. Note You may have to use the F7 key to select this setting. Let the startup process continue. When Windows restarts, the system restore process should resume and finish. These steps restore the computer to its "R1" state. To recover from the failed restart To recover from the failed restart and roll back the restore process, follow these steps: As described in the previous procedure, restart the computer and then enter WinRE. In the Windows Recovery Environment, select Troubleshoot > Advanced options > System restore, and then select Undo system restore. These steps return the computer to the state that it was in before you started the restore process. To restore Windows to a restore point by using WinRE To start the System Restore wizard on an affected computer, use WinRE instead of the Settings dialog box. To do this, follow these steps: Select Start > Settings > Update & Security > Recovery. Under Advanced options, select Restart now. After WinRE starts, select Troubleshoot > Advanced options > System restore. Enter your recovery key as it is shown on the screen, and then follow the instructions in the System Restore wizard.