Invalid command. FCM for Windows does not support OFFLOAD with the combination specified for backup destination and version of Windows.
The OFFLOAD option was specified with an unsupported backup destination. FCM for Windows only supports offload with a backup destination of TSM, or if running on a Windows Server 2008 or later, backup destination TSM or BOTH.
The backup operation is canceled.
Retry the VSS offloaded backup operation specifying a valid backup destination.