I am new to server 2012. I'm in a small environment and using my 2012 server as an integrated AD/DNS/DHCP/NPS server. I've successfully set up AD, DNS, and DHCP, and have NPS installed.
The error I get is:
Error 0x80072740: Only one usage of each socket address (protocol/Network address/port) is normally permitted.
I've found Microsoft posts that for server 2000/2003 a registry key existed to exclude those ports from the dynamic range. For server 2008 and beyond, that key has been sunsetted and is no longer used, in part because DNS dynamic ports have been shifted further up.
I've done a 'netsh int ipv4 show dynamicportrange udp' and found that the range is 49152-16384, which I'd expect. If you perform a netstat -ano | findstr 1812, nothing is using port 1812. (True also of 1813, 1645, and 1646).
I am at a loss as to where to go next. Any help is appreciated.