Hi I am unable to to connect to a friend's party but i do have connection to live and am able to play halo reach matchmaking fine. I have played with him before so i'm kind of stumped.
I'm running live through my computer and that connects to the net via wireless. My nat type is closed (I would have thought this was the problem if i hadn't connected to him before)
I live in Australia, New South Wales, Narara
My Service provider is Telstra
Here is the error status report when i run (and pass) the connection test