Veeam: Unable to install Windows 2008 R2 SP1 error 800F0A12

June 19, 2013

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A friend of mine was running windows 2008 R2 without Searvise pack 1, when he decided to run the service pack 2 one of  his test Veeam Backups servers he got an error message.

To solve this nuisance problem follow the following steps:

  • Be sure there are now active Veeam Backup jobs. But I think that’s not the case during maintenance windows.
  • Open a command prompt and start DISKPART.
  • Enable the automount feature via: automount enable.
  • Restart the Veeam Backup server.
  • Install Windows 2008 R2 Service Pack 1.
  • Restart the Veeam Backup server.
  • Open a command prompt and start DISKPART.
  • Disable the automount feature via: automount disable
  • Restart the Veeam Backup server.

This will solve the problem if you follow the steps correctly.

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