I have a very strange problem that I can't figure out.
The server has Active directory, DNS, and TS. Please don't get off track by telling me you can't do that. ;) You can.
If I change the servers IP address, Internet comes back and I can ping the gateway once again. If I put it back to the original IP it fails once again and I can't ping the gateway.
So far there are 2 IPs that I can't use any longer as they do not work on the server for some reason. It will work for about a day, then stop, Internal connections are fine, just no gateway access and TS clients can't connect since I can't ping the gateway.
There is no anti-virus software is installed. I turned off the servers firewall. to rule out any conflict.
This is a very difficult problem to diagnose.