Regback Copy Not Working _hot_ | Trending ⟶ |

Regback Copy Not Working: The Complete Guide to Fixing Windows Registry Backup Failures

Introduction: The Dreaded Registry Backup Error

For Windows system administrators, IT professionals, and advanced users, few error messages are as frustrating as discovering that your registry backup has failed. When you receive the notification that the "regback copy is not working," it signals a breakdown in one of Windows’ most critical self-preservation mechanisms—the automatic backup of the registry hive files.

What to Do When Even These Solutions Fail

Sometimes, the underlying disk has corruption or the Registry structure is damaged beyond standard repair. In this case:

Restart and Run Task: Restart your computer. To trigger the backup immediately, open Task Scheduler and run the RegIdleBackup task found under Microsoft\Windows\Registry. Alternative: Manual Backups regback copy not working

Store these .hiv files on an external drive or cloud storage.

3. Insufficient Privileges (Even as Administrator)

Windows Registry protection goes beyond standard UAC. Even an Administrator account runs with filtered tokens. The SYSTEM account and TrustedInstaller have higher privileges than your admin account. Without taking ownership or using specific backup privileges, the copy operation will fail with "Access Denied." Regback Copy Not Working: The Complete Guide to

Article last updated: 2025

  1. Open regedit as Administrator.
  2. Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Configuration Manager
  3. Create a new DWORD (32-bit) value named EnablePeriodicBackup.
  4. Set its value to 1.
  5. Restart your computer.
  6. After restart, run the Task Scheduler: Go to Task Scheduler Library > Microsoft > Windows > Registry.
  7. Right-click RegIdleBackup and select Run.
  8. Check C:\Windows\System32\config\RegBack. You should now see files with actual sizes (not 0KB). You can now copy them normally.

It was 2:00 PM on a Tuesday. Alex’s company file server (Windows Server 2016) had blue-screened overnight. After rebooting, users reported “access denied” on shared folders, and some applications failed to launch—classic signs of registry corruption. Open regedit as Administrator

3.1 Windows Version 1803+ Changes

Starting with Windows 10 version 1803, Windows no longer automatically backs up the system registry to the RegBack folder.