How to Troubleshoot Backup Error 0x8078012D on Windows PC

If you are getting the following error message when using Windows 10 backup and restore tool, this article may help you:

The operation failed due to a device error at source or destination, Request could not be completed due to I/O device, Error 0x8078012D.

What is the cause of backup error 0x8078012D?

Third-party AV conflict: It turns out that this particular error code can also occur due to a conflict between Windows Backup and a third-party program that considers the newly created backup file a potential security threat.

Damaged memory sectors: In some cases, this error code may appear if the hard drive/SSD contains damaged memory sectors that are no longer readable.

Windows Backup service is disabled: According to many affected users, this problem may occur because the main service that should perform this task is disabled (Windows Backup).

Conflict with the Shark007 codec pack: If you previously installed a third-party codec pack (Shark007), be aware that Shark007 conflicts with several built-in utilities in Windows 10, including Windows Backup.

Corrupted system file: In some cases, a corrupted system file that affects certain operating system dependencies used when Windows needs to back up can cause this error code.

How to resolve backup error 0x8078012D?

Check the user profile

  1. Click the Start button
  2. Click Control Panel
  3. Click on User Accounts and Family Safety
  4. Click on User Accounts
  5. Click Manage another account.
  6. Click Create a new account to create a new account.
  7. Restart your computer.

After you create a new account, you will need to sign out of your current account and log in with the newly created account. Run Windows Backup again and check if the 0x8078012D error persists.

Perform an SFC scan

  1. Open the charm pane.
  2. Type cmd in the search box
  3. Right-click on Command Prompt
  4. Select Run as administrator
  5. Enter
  6. Type sfc /scannow
  7. Press Enter

Turn Windows backup services on

  1. Open the Charms panel by pressing the Windows and C keys (or by swiping the screen to the right).
  2. Tap on Settings.
  3. Select Control Panel.
  4. Click Administrative Tools.
  5. Click on Services.
  6. Locate the shadow copy of the volume and right-click it.
  7. Select Properties
  8. Change the boot type to manual.
  9. Click OK
  10. Search for a Windows backup service
  11. Follow the same steps as for the volume shadow copy.

Run chkdsk

  1. Click on the Start button.
  2. Type cmd in the Search box
  3. Open the command prompt
  4. Type :
    chkdsk /f C :
  5. If you want to change the drive, replace C: with your drive letter.
  6. After the chkdsk process completes, restart Windows 7 and run the backup again.

Frequently Asked Questions