I'm watching CNN via Xfinity Comcast.
Had to perform a Silverlight upgrade to get it to work.
When I tried to watch live at CNN I got an error.
Here's a tweet I sent out with the error "NOT PROPER AUTHENTICATION":
Trying to watch CNN Live TV at CNN.com. Get "NOT PROPER AUTHENTICATION" error. Worked on iPhone. Help.— Steve Garfield (@stevegarfield) September 20, 2012
Xfinity saw the tweet and helped out:
When I tried to watch on Xfinity, I got a message telling me to upgrade my Silverlight plug-in. CNN didn't have that message.
Note: To watch online, you've got to be a cable subscriber and authenticate with your cable company account username and password.