If your computer is still functional and you want to ensure you have registry backups for the future, you must manually re-enable the feature through the Windows Registry. How to turn registry backup back on in Windows 10
If you are experiencing this issue, you will likely notice one or more of the following symptoms: regback copy not working
Starting with Windows 10 version 1803, Windows no longer automatically backs up the system registry to the RegBack folder. If your computer is still functional and you
Navigate to: HKLM\System\CurrentControlSet\Control\Session Manager\Configuration Manager . In legacy Windows versions, the command copy regback
In legacy Windows versions, the command copy regback or copying files from C:\Windows\System32\config\RegBack was a standard disaster-recovery procedure.
Troubleshooting "RegBack Copy Not Working": Why Your Windows Registry Backups Are Missing
Please let me know if you'd like me to modify anything.