Hey everyone! I finally got my CoD mp to work!
It seems that one of my anti-virus programs had a firwall with it, so that meant that I had two firewalls on at the same time; the windows firewall and this one.
It worked after I turned the firewall off and left the windows firewall on.

Is it possible for too many programs installed on my computer be the cause?

nope, this is the first time i have ever heard of peergardian

I am using a real cd key and i have already tried most of the suggested things, but there is just something messed about my cod program. I went through the folders for cod and took out everything that I knew that wasnt there in the first place.

is there anyone who knows how to fix my cod mp? My router is fine, i cant find anything wrong with it.

It's not cod2, I only have cod1. I'm not sure if u can play aoe2 online, that is if u can find anyone who is hosting a game. We used two computers using the same router with two laptops using wireless connection to the same router

ok, i did what it said. but i still get no signal. I wonder if this would help, because before i couldn't recieve a signal, me and my friends played a LAN multiplayer of Age of Empires 2. could that possibly have altered the system?

I already mentioned that even if i turned it off, it still wont work. This is very strange because i could play it before.

i am only using the windows xp firewall

ok, thanx anyways

i do have a router, and a fire wall(cod mp still doesnt work when its off), i have scanned my computer using ad-aware, and did a virus scan with symantic. and i dont think i have an ISP problem.

but i also cant connect to the severs either

I dont think so, I even tried it with my firewall turned off and it still didnt work

yea, my internet works fine, nothing is wrong with it. 'Cause i was able to play multiplayer before, but suddenly it was unable to connect

For some reason, my Call of Duty multiplayer doesn't work. Every time i try to referesh the list of servers, it just says "Waiting for responce from master server."