I recently rebuilt my Plex Media Server box as a CentOS 7 VM running on Hyper-V on a Windows Server 2012 setup.
When I installed the rpm and started the service I found that I was unable to load the interface on my desktop. I knew that it was running because I installed netstat and I was able to see the port was open for traffic and I was also able to load the interface locally in lynx on the server.