How do I enter an online match on halo 3?

[Michael B]

i recently returned to halo 3 only to find i could not enter an online match. matchmaking works fine and i get onto the screen that shows me who i am about to play, then it dumps me back to the matchmaking lobby. I have been able to play halo 3 online before but after about a month of non-use, it isn't working. Any advice would be greatly appreciated.

 

[myxboxspot.com]

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