I got it working on 81. It was allowing Java through the windows firewall. Not running as a service quite yet. Just running minimized. This allows more options for a start. I will eventually run it as a service. It seems to work flawlessly. I really like having a powerful server running this, I am connected wired at 1Gb and the quality of fast forward, scene by scene, etc is top notch.
BTW, my operating system is actually Windows Storage Server 2008 R2. Not plain vanilla Windows Server. It offers file level DE-duplication and some real file share acceleration.