Hello! Well, I will be brief.
Not long ago, I got a topic here on just the same. About error that could sometimes when the discovery messenger shall make jokes with us.
I believe that this should be something with the servers, as explained to me the other topic. However, I had uninstalled it and ran MSN. It worked! Then installed again and also worked. He was working all this time. But now when I uninstall and install again, keep getting the connection error. I wonder if there is a way (not too complicated) to enter the MSN with the M.D. installed, the messenger discovery as it is me too useful.
Thank you, Vinny.
(excuse the bad English, I am Brazilian and use the google translator)