Windows Backup failed with error 0x807800C5
- by Alexey Ivanov
I setup backup of my Windows 8 laptop with Windows 7 File Recovery (known as Backup and Restore in Windows 7).
Backup of files runs successfully. But if I try to create system image, it fails with error 0x807800C5:
Error details on the dialog:
The mounted backup volume is inaccessible.
Error details in the system log:
There was a failure in preparing the backup image of one of the volumes in the backup set.
I save the backup to a network location, WD MyBookLive.
Edit:
I tried some of the steps suggested in the various thread about this issue:
Cleaned up the backup location:
Removed MediaID.bin in the backup location.
Removed folder <ComputerName> from WindowsImageBackup.
Restarted backup resulted in the same error. However, the error dialog shows slightly different error message:
The specified backup disk cannot be found.
Performed System File Check by running sfc /scannow. It showed no errors.
Running backup failed nevertheless.
I tried searching Google for error code but I've found no solution so far.
Update:
I submitted technical support request to Microsoft. The first suggestion was to clean boot, but it didn't help. I pointed out that I had tried all the methods from the same problem on MS Answers, and nothing had helped.
