Internet TV: Video Not Available

[wilkinism]

I was checking out the newly-released Internet TV [beta] feature of Media Center, but every clip I tried to watch returned the same error message:
'The Requested Video is Not Available'
I tried browsing the same content on a friend's computer running Vista Home Premium x86, and the clips played without issue.
I understand that Internet TV is still in beta, and if there is a flaw in the feature then I hope this can be fixed before the final release.
Anyone have a solution or similar experience?

 

[funnybean14]

I figured out the problem. I was having the same issue. After fiddling with a couple of different things, I finally found the answer. The video is streamed through MSN. I signed in to MSN messanger and suddenly the all of the videos work!

 

[jennifermassage]

This did not work for me. I still can't get videos to run. Grr.

 

[djvista]

Similar to the suggestion by funnybean14: In IE8, go to Tools>>Internet Options>>Programs>>Manage add-ons. Enable Windows Live Sign-in Helper under the Microsoft Corportation heading. If you don't see this add-on, you probably need to install Windows Live.
This also works in Windows 7.