I did a fresh install of WS 2012 R2. I enabled remote access as normal leaving network authentication on. I am unable to rdp to an administrator desktop. I then enabled pinging of the new server to make sure I can see the server. I am able to ping the server from the WS I wish to RDP from and to ping the WS from the server.
I have installed a lot of servers and never had an issue with this.
Anything new in R2 which I'm missing?