KB1976: Jobs fail with “Error: Completion Timeout Occurred”
https://www.veeam.com/kb197612.12.2014 · Jobs that are using a proxy, windows repository, or Hyper-V host that have multiple NICs are failing with “Error: Completion Timeout Occurred” Cause Unless the preferred network is specified, by default Veeam will attempt to establish a connection with each NIC on the target host and then automatically determine which one it should use.