Press Win + R , type regedit , and hit Enter.
Now give Administrators Full Control: In Security tab, select Administrators → Edit → Allow Full Control.
: Go to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Configuration Manager . regback copy not working
Press Win + R , type regedit , and press Enter.
How to Fix the "RegBack Copy Not Working" Issue in Windows If you are trying to recover a corrupted Windows system using the Command Prompt, you might have navigated to the C:\Windows\System32\config\RegBack folder only to find that the registry backup files (DEFAULT, SAM, SECURITY, SOFTWARE, SYSTEM) show a size of . When you try to copy them, the restore fails, or the backup simply does not work. Press Win + R , type regedit , and hit Enter
Since your RegBack folder is currently empty, you cannot use it to fix a broken registry now . Instead, you should rely on System Restore, which is the modern replacement for the RegBack method.
(Note: This is a simplified version—the full RegIdleBackup task backs up all five hives.) Press Win + R , type regedit , and press Enter
The Windows Registry is the central database that stores low-level settings for the operating system and installed applications. A corrupted registry can lead to blue screens, application crashes, boot failures, and system instability. That is why Windows includes a built-in feature called (Registry Backup), which automatically creates copies of registry hives (SAM, SECURITY, SOFTWARE, SYSTEM, DEFAULT) in the C:\Windows\System32\config\RegBack folder.
: If you navigate to \Windows\System32\config\RegBack , you will likely see registry hives (DEFAULT, SAM, SECURITY, SOFTWARE, SYSTEM) with a size of 0 KB .