After a long time fighting with it, I just disabled the ping test and things worked pretty good. It appears when the VM’s boot, unless you are watching the console and click OK to the network discovery, it will fail. If you do they work fine and stay up.
They are all static IP, auto MAC address from VMware. I do notice SureBackup gives them a new MAC, which could be causing this, but I’m not about to change 100’s of VM’s to static MACs in VMware as it’s not even concurrent if I wanted too.
To skip all the time wasted troubleshooting, It appears when the new MAC boots up, it was hitting the private network instead of the domain network firewall. Odd, because it’s still “on the domain” with the DC’s in my Veeam Lab.
a GPO added allowing inbound from the specified networks of my machines to the private network as well as domain network has solved this issue and Ping test is now working, along with RDP and not having to click the Windows notification.
That was a pain, but happy it is fixed. There was next to no info on this specific issue anywhere so it might be environment related, but between the forums, here, google, etc. it was a dead end. I think I may have even mentioned it support but can’t recall. Either way it wasn’t a “Veeam” issue so they couldn’t have fixed it.