I have the same error a lot of others have had or still do. I can't join servers on 1.08. However, there is something different. I can host. Others can join and play. But I can't join servers. It always comes out with The game has closed, Retrying Network, CD Key is invalid, etc etc.

It's really annoying me, cause I used to be able to. Then, just suddenly, it died. No reinstall, no network down or anything. Just that one day, I wake up, turn on Halo CE, and no servers can be joined.

Hosting isn't that bad...but sometimes I'd rather go play in another game where I don't have to wait for players to join.

Any help on this issue?

I have read
http://hce.halomaps.org/index.cfm?nid=354
and
http://hce.halomaps.org/index.cfm?nid=311

None helped much.