We have a Hyper-V Host that acts as a replication destination for another Hyper-V Host. We have the latest Veeam Agent for Windows (VAW) on this machine to back up the OS partition but at the moment the service for the VAW says it has started but the Console says it isn't running. Restarting the service results in it saying "starting..." but eventually times out.
I uninstalled VAW and reinstalled, but during the install it says "Cannot start service" (below). I can't reboot this server as it has half a dozen VMs running on it. I think I've got to the point that I'm not sure what I can do now.
This KB article (below) was of no help, and the last line made me slap my forehead and think of that infamous BIOS error that says "Keyboard not found, press any key to continue" as it asks that I open a support ticket from within the Veeam Agent that isn't functional.
"If the described methods do not resolve the issue, please open a support case by going to VEB/VAW Control Panel > Support > Technical Support."
https://www.veeam.com/kb1959

Opened a ticket through that client's Backup & Replication account. Case #03157309.