I have WSUS running on a Windows 2003 server as a VM on VMWare ESXi, It has been plugging right along without issue for some time. Two days ago I rebooted it because it was asking for a reboot after updates. After the reboot the server did not respond on the network. I ran ping /t to it and rebooted, the server would respond to pings for a few seconds on boot then stop once the screen said "Preparing network connections". I did some searching online and found some recommendations about running RPC service as Local System instead of network service. I tried this and now it never responds to a ping at any point of boot. If i attempt to do a ping from the server itself to any IP on the local network it says "Destination host unreachable". The server can ping itself just fine but nothing else, there is no communication at all between it and the network. I tried adding another NIC to the VM and that NIC can not get DHCP. There are issues in the event log about GP's etc which I believe are due to the server not being able to see the network.