I have IPTV connection at my home, and use it to watch TV (though not frequently). I have also an IPTV PC Application installed, and rarely use it to test the TV connection. I have Windows 8.1 and in the past it worked flawlessly on the both PC and my SmartTV.
However, last week when I tried to run the PC application, no channel was playing; even though it was streaming correctly on SmartTV, and other PC and OS-X machines at home fine. As it worked in past for the same PC and Windows installation, I knew it has to something with some recent software configuration changes…