Error Message

Database backup fails with error:

V-79-57344-913 - Backup Exec cannot find a copy of the Exchange database. Check your backup selections and ensure that a healthy database copy exists on the server, and then run the job again.

Backup Exec Debug Log (SGmon logs on the Exchange server):

MONAD:  [0000] [1] [] Exchange2013Component::CreateRunspace configure Remote PowerShell - Exception: Program 'whoami.exe' failed to execute: Access is denied At line:1 char:7 + whoami <<<< .
MONAD:  [0000] [1] [] Exchange2013Component::CreateRunspace local PowerShell
MONAD:  [0000] [1] [] Exchange2013Component::CreateRunspace configure Local PowerShell - Exception: Cannot load Windows PowerShell snap-in Microsoft.Exchange.Management.PowerShell.E2010 because of the following error: Could not load file or assembly 'file:///C:\Program Files\Microsoft\Exchange Server\V15\bin\Microsoft.Exchange.PowerShell.Configuration.dll' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
MONAD:  [0000] [1] [] Exchange2010Component::GetExtendedDatabaseStatus: InitializeRunspace
MONAD:  [0000] [1] [] Exchange2013Component::CreateRunspace remote PowerShell
MONAD:  [0000] [1] [] Local State: Opened

The 'whoami.exe' file is quarantined by Sophos Anti-virus program.

Move the quarantined file 'whoami.exe' back to the original location.

Restart the Backup Remote Agent Service on the Exchange server and run the backup again.