Please fix so GRT backups with HyperV agent on File Servers do not produce Exceptions. The system should exclude DFS Root folder by default and it should be in the documentation that the GRT enabled backups of DFSRoot folders is not possible. The product is designed for a one-pass backup and to have a solution suggesting a second backup just to remove the exception does not make sense. Please fix this exception or include it in the documentation. I don't want to run a separate backup just to avoid an annoying completion with Exception. Additionally it impacts any auditing and drive space. If you can code the HyperV agent to properly backup Exchange and allow GRT then you can and should fix this exception on DFS roots and file servers. Remember, you advertise one pass backups and this is impacting auditing and space just to avoid exceptions.
The agent & GRT should recognize the DFSRoot folder and exclude it from producing an Exception.