Few days ago i had to download and install MSN new live messenger after using 8.5 for a long time without any problems. yesterday i tried to video chat with family overseas. people on the other end had no issues, they can see me as well as themselves, However; on my end i was able to see them but not my own cam i have a grey box with a large red X in the middle. Googled the issue to find out that the new messenger uses the same ports for cam and advertising.

If you are having this issue, go to your profile and change your location, if this doesn't work like in my case, uninstall the new live messenger and reinstall the 8.5 version. Problem solved.
a month later
my friend found a bug that will reverse everything after it.
My email looks like this moudi@leetcoders.org, if i put the "Special character" it will look like this
gro.sredocteel@idoum its awesum lol i drive people crazy with it
Thanks for sharing the solution.