thanks for the quick response.
Did you use specific credentials to connect to the VM? Are these correct?
Yes, i have a special backupuser who is processing the task of backup. The User has all necessary rights - i´ve tested the credentials before.
Are the hyper-v integration tools installed?
Yes, all the Hyper-V-Components are up to date [Updates are running over WSUS Central Server with zero pending updates]
Can you verify if you have connection from the backupserver to that VM?
Both servers are in the same subnet. I can ping between them. The strange thing is that backup works flawless, but AAIP will not work at all no matter which server i choose.
I double check the connections (FW-Rules) and report back before i open a case.