Situation: The client has Veeam backup problem with this error: Unable to read data from the transport connection: Unable to establish authenticated client-server connection
Troubleshooting: From the log (C:\ProgramData\Veeam\Endpoint\Agent_Backup), we also find: Error [ProxyThrottling] Error while setting throttling, sourceIPs [10.255.255.59,10.255.255.58,10.0.0.104], targetIPs [10.0.0.92]. The target server is multihomed server with two Networks connections (10.255.2550/24 for SAN and 10.0.0.0/16 for LAN).
Resolution: Disable Automatic selection in Backup Repository and change it to The following server.
