dears, I am trying to take a backup for Microsoft exchange 2013 it was working but suddenly now not working and this error comes Error: VSSControl: Failed to prepare guest for freeze, wait timeout 900 sec any feedback please
by fraack » Sun Jan 22, 2017 2:00 pm 1 person likes this post
you can try to increase the VSS timeout values in your DAG. "Increase the DAG heartbeat time to avoid cluster failover (no reboot or service restart needed, they are online after you press enter). On a command line (with admin rights) cluster /prop SameSubnetThreshold=20:DWORD cluster /prop SameSubnetDelay=2000:DWORD cluster /prop CrossSubnetThreshold=20:DWORD cluster /prop CrossSubnetDelay=4000:DWORD cluster /prop RouteHistoryLength=40:DWORD (need to be double the amount of CrossSubnetTrashhold)"