Internal Error: The startup handshake protocol between the Data Protector INET agent and the invoking session manager failed.
Verify that the INET executable on the client computer and Session Manager versions are compatible.
Adding 2003MS VM to a 2003 cell manager. This server was backing up 100% until 4 days ago. I cannot find any errors in the log files. I removed the client and agents. Then i tried to re-install the agents remotely and it fails with the above error.
I have checked all network related configurations and everything is working ok.