You cannot restore the system to a restore point after you install a Windows 10 update
Symptoms: computer experiences a Stop error (0xc000021a).
To avoid this issue
To start the System Restore wizard on an affected computer, use WinRE instead of the Settings dialog box. To start this process from the Windows desktop, 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.
Symptoms: computer experiences a Stop error (0xc000021a).
To avoid this issue
To start the System Restore wizard on an affected computer, use WinRE instead of the Settings dialog box. To start this process from the Windows desktop, 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.
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