Error: "Unable to execute request (111). Unable to gather Volume Shadow Copy Service information" (4220565)

To determine where the backup is failing:

Enable debug logging:

        - From the Recovery Manager console right-click on the top Recovery Manager for Active Directory node and choose Settings.
        - Select the Logging tab and check Use diagnostic logging and click OK.

1. Run a backup to reproduce the error
2. Locate the agent log on the Domain Controller under the path C:\Windows\QuestRecoveryManager
    - If the agent was preinstalled the log is named BackupAgent64.log
    - If the agent was not preinstalled the log is named ErdAgent.log
3. Open the log and search for Unable to gather Volume Shadow Copy Service information
4. The lines above the error should indicate the path that could not be found. For example, it may show something similar to:
    - No such file or folder \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy25\Windows\SYSVOL\staging areas\<domainName>\, 0x80070003
   OR 
    - GetVolumeNameForVolumeMountPoint(\\127.0.0.1\ADMIN$\<PathtoFIleOrService) failed, 0x00000057
5. For errors similar to the first example, try to access the path referenced in the log from the RMAD server using the admin share. For example, using the path provided above, with a Domain Controller named DC1, using the same credentials used to perform the backup, open Windows Explorer on the RMAD server and enter : \\dc1\c$\windows\sysvol\staging areas\<domainName>
6. If you cannot access the path, the issue is most likely permission based or an issue with that Domain Controller.
7. For errors similar to the second example, VSS does not support local share names. Search the registry for the UNC path specified in the error and change the UNC path to a physical path (for example C:\Windows\PathToFileOrService) and restart the VSS service.