This seems to be an intermiteint issue with the service. I have a desktop PC (i.e., wired) using my Comcast Business class Internet service. Starting last Saturday evening, I began to get the message that I could not watch Live TV because I was not on my Home WiFi. I am only able to watch TV GO channels.
This happned about three months ago...and took several weeks to get resolved. Then it seemed to work fine until last Saturady now it is happening again. This is very frustrating.
I have Comcast for Phone, TV and Business Class Internet...I expect better relaibility for more than $300/month.