You cannot perform GRT-enabled restores of application data from this backup

We get this error message when running backups of hyper-v virtuals using backup exec 2012 (14.0.1798.1300).  the credentials are fine and when we look at the restore i can see individual files.  Why am i getting these errror?

Backup- VRTSRV::\\server1\Hyper-V?Virtual?Machine\server10V-79-57344-38726 - Backup Exec failed to connect to virtual machine 'server10' and was unable to collect the necessary metadata to restore individual application items. You cannot perform GRT-enabled restores of application data from this backup. You must install the Agent for Windows and the virtual machine tools provided by your host software on the virtual machine.