V-79-10000-11226 – VSS Snapshot error. The Microsoft Volume Shadow Copy Service (VSS) snapshot provider selected returned: “Unexpected provider error”.
I was receiving this error in Backup Exec 2010 R3 while trying to back up a virtualized Exchange 2010 server. This error seemed a little odd, so first I ran VSSADMIN LIST WRITERS from the command prompt I verified all my writers were listed as “Stable” and all reported “No Errors”. I then ran VSSADMIN LIST PROVIDERS and immediately identified my problem.
I had two VSS Providers on my system. The first was the Microsoft Software Shadow Copy Provider which I wanted to use. The second was the Symantec Backup Exec VSS Provider which was unnecessary. I was backing up a Server 2008 R2 server, so the built-in system provider from Microsoft is actually superior to the Symantec one.
The strange part is that the Symantec Provider only installs when you pick the Advanced Open File Option checkbox during the Remote Agent push, which I had done only a couple of days before. It was also a brand new server deployment so I was perplexed how the Symantec Provider was even present.
In any case, I knew it was for the best to remove the second provider. However, when I uninstalled the Remote Agent and rebooted the provider remained. So I did a little searching and thought I’d share the manual removal process for the Symantec Provider (and ultimately what was the fix for my error).
- Log onto the source computer that is reporting the error.
- Open a command prompt.
- Type VSSADMIN LIST PROVIDERS
- Find the Provider ID for the Backup Exec VSS Provider (see screenshot below – this only shows the Microsoft VSS Provider).
- Open the Registry Editor.
- Navigate to HKLMSYSTEMCurrentControlSetServicesVSSProviders
- Delete the registry key with the Provider ID found in step 4.
- Reboot the server.
- Reinstall the Backup Exec Remote Agent (do not check Advanced Open File Option).
- Run VSSADMIN LIST PROVIDERS again to make sure only the Microsoft Software Shadow Copy Provider is present.