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For the last week one server is failing backups to a NAS with

The backup operation that started at '‎2017‎-‎12‎-‎17T23:37:47.558318200Z' has failed with following error code '0x807800C5' (There was a failure in preparing the backup image of one of the volumes in the backup set.). Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.

It creates the shadow copy, backs up the EFI partition, moves on to backing up the C: drive and then fails

Backup_Image

Other servers, plus a whole raft of Sybase databases backup to the same NAS without any problems

I changed WindowsImageBackup to a different name. It created the directory but still fails, getting only as far as

Drive_Image_One

This Saturday (after patch Tuesday) it was rebooted, but still the same. At a loss with this one!

Thank you

gchq
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  • Looks like you aren't the only one: https://social.technet.microsoft.com/Forums/Lync/en-US/f965a05b-a875-408d-8398-33b445437c97/windows-2016-backup-fails-event-id-517-error-code-0x807800c5?forum=windowsbackup – Strepsils Dec 26 '17 at 18:35
  • I too also tried TechNet at https://social.technet.microsoft.com/Forums/ie/en-US/02d84586-e275-4951-bba8-fd25ba19b590/server-2016-windows-backup-fails-with-error-code-0x807800c5-2155348165?forum=winservergen - since then another server has started with the same problem – gchq Dec 26 '17 at 21:54

1 Answers1

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Stumped by the same problem on my VM 2016 Server where the following error entries on the BU job in the web admin GUI: enter image description here wbadmin GUI Backup listed errors

In my case, I resolved the issue by:

  1. Deleting the existing scheduled Job

  2. Opened the Config Settings: enter image description here (Right mouse click 'Local Backup') and changed from 'Faster Backup Performance' to 'Normal': enter image description here

  3. Executing a backup once a job that did not point to a sub directory as shown in the first image above.

The job was executed successfully.

Afterwhich I then created a scheduled job & executed it once to confirm functionality.

Perhaps, this may help some of you guys out.

djdomi
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Porky
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