xcopy D:\Windows\System32\config\RegBack\* D:\Windows\System32\config\ Use code with caution.
Click Apply → OK.
Note: Even after this change, you may still see 0 KB files until the task runs in the Task Scheduler . What to Do if RegBack is Already Empty
Open your C:\Windows\System32\config\RegBack folder to verify that the registry hives (DEFAULT, SAM, SECURITY, SOFTWARE, SYSTEM) are no longer 0 bytes. Method 3: Use System Restore in Command Prompt regback copy not working
copy C:\Windows\System32\config\RegBack\SYSTEM C:\Windows\System32\config\
If the RegBack files are empty, you should use Windows System Restore points, which are more reliable. Open the WinRE Command Prompt (as shown in Method 2). Type rstrui.exe and hit Enter. Select a restore point prior to the issue. Proactive Steps: How to Prevent Future RegBack Failures
Next to "Owner," click Change and type Administrators → Check Names → OK. What to Do if RegBack is Already Empty
Starting with Windows 10 (version 1803) and continuing through Windows 11, Microsoft intentionally changed how the operating system handles registry backups.
If your system still boots but you want to populate the RegBack folder immediately after enabling the registry key above, use Task Scheduler: Open as an Administrator. Paste the following command and press Enter :
Often, a perceived registry error is actually a corrupted boot sector. You can use the Advanced Command Prompt to rebuild it. From the Advanced options menu, click on . Type rstrui
Boot into the via a bootable USB or by crashing the boot process three times. Go to Troubleshoot > Advanced Options > Command Prompt .
Starting with Windows 10 build 1709 (Fall Creators Update), Microsoft changed the default behavior of the Registry backup mechanism. To save disk space and reduce background I/O,