Ok, i just spent an hour looking for this kind of topic with exactly the same problem as me. And i also registered JUST to write this lol.
So PLEASE somebody help me out, i see this topic is quite outdated so either all the people fixed there probs or they gave up >_<.
But if anyone out there knows how to fix this problem it would be a great help, I have got a perfectly legal version of Red Alert 2 that ive been using since it came out. I recently (2days ago) reinstalled Ra2 because my bro came bk home nd wanted a game, so i played with him for awhile, then did the next day. But TODAY whenever i go into Custom Match it instantly quits outta game when i get in there :'(
Quick match works btw (i owned someone )
Anyways, get bk ASAP.
-Ross