[br3nd064]

My friends and I have started getting this error message recently in Modern Warfare 2. I've found that it only happens when the person is chosen as host for the next match. Also, sometimes when the person is chosen for host, it will act like it's about to time out, but will recover after about 30 seconds or so.

We have different ISPs, so it's not the ISP randomly blocking a P2P port or something. This just started happening about a week ago. Before then, I'd never seen this problem before, so that makes me think a patch started it. We're all on windows 7 x64, and from what I've read, MW2 and 7 aren't fully compatible, so that could also be causing some glitches.

Any help/ideas?

 

[JTD92]

Is your mic plugged it?

 

[halifax1]

Unlike people who don't like to help at all and just post random things, I will try to help.

This error has happened for me on MW2 and MW. It was fixed by plugging in a Mic or making sure your Stereo Mix is enabled.

You can try this by:

Right click your volume icon in taskbar.
Click "Recording Devices"
In the blank space, right click and make sure the following is checked:
- Show Disabled Devices
- Show Disconnected Devices
Then enable the Stereo Mix option.

This most likely will help, but it is not the only solution but it's the most common.

 

[br3nd064]

Thanks for the response halifax. I right clicked and checked both "disabled" and "disconnected", but I still can't see the Stereo Mix option. Would it have something to do with me using a USB headset instead of normal 3.5mm audio plugs?

 

[JTD92]

Quote:

Originally Posted by br3nd064 Thanks for the response halifax. I right clicked and checked both "disabled" and "disconnected", but I still can't see the Stereo Mix option. Would it have something to do with me using a USB headset instead of normal 3.5mm audio plugs?

Maybe thats the problem. If you find a 3.5mm headset.

 

[br3nd064]

Thanks for the responses; I enabled Stereo Mix, so I'll see if that does the trick.

 

[keitare]

I kept having this happen last night after a steam patch. It turned out to be corrupted file. Just go to the multiplayer click properties then select check game files integrity. That fixed it for me.

 

[Xombie]

It happens to me once in a while too.

Restarting usually fixes the problem.

Gl.

 

[the3lement]

Yeah i have the same issue. When i get selected as host for a game in MW2, I can host flawlessly the first time around, and since its MW2 and if you stay in the same lobby, you're automatically picked for host for the following games. When I'm host and start the second game, i can load the map fine, but once it goes to "Awaiting Challenge...2" it freezes and says iw4mp.exe has stopped working. I'm on Win 7 x64 as well.

 

[chronicbucks]

i just got this like an hour ago for the first time, and I also had just been chosen as the host

also has anyone noticed a bunch of games never starting?? the map loads, and then it awaits connection and eventually the game lobby is closed, this just started happening to me last night and happens maybe once an hour?

 

[prostreetcamaro]

New member here with the same problem. I host most of the time with my 20/5 fiber connection and 4Ghz quad and SSD. First map goes fine. Then loads second map loads and gets to awaiting challenge 2 then poof iw4mp.exe has stopped working. I have made absolutely zero changes to this computer. I use auzentech forte soundcard with audio technica AD700 headphones and audio technica mic. I dont have stereo mixer that I can find?

 

[mtbiker033]

kind of interesting MW2 program name is the same as COD4, iw4mp..hmmm

 

[7hm]

Quote:

Originally Posted by br3nd064 My friends and I have started getting this error message recently in Modern Warfare 2. I've found that it only happens when the person is chosen as host for the next match. Also, sometimes when the person is chosen for host, it will act like it's about to time out, but will recover after about 30 seconds or so. We have different ISPs, so it's not the ISP randomly blocking a P2P port or something. This just started happening about a week ago. Before then, I'd never seen this problem before, so that makes me think a patch started it. We're all on windows 7 x64, and from what I've read, MW2 and 7 aren't fully compatible, so that could also be causing some glitches. Any help/ideas?

Go into your steam folder delete the iw4mp.exe and the mp_playlists.ff file in zone/english folder then open steam right click on mw icon go to properties local files verify integrity and voila problem solved.

I had the same issue after the update and i tried settin r_gpuSync to 0 didn't fix it however deleting those files and verifying integrity worked.

 

[mrod]

This happened to me with COD 4 and they still haven't fixed it?

 

[prostreetcamaro]

Quote:

Originally Posted by mtbiker033 kind of interesting MW2 program name is the same as COD4, iw4mp..hmmm

Actually cod4 was named iw3mp.exe

 

[br3nd064]

Turns out neither the Stereo Mix nor the deleting iw4mp.exe fix worked

 

[Pabloblue]

THIS IS IT!! FOR REALS!!

There are two files, in your steam folder:

mp_playlists_dlc1.ff
mp_playlists.ff

If you change these to:

mp_playlists_dlc.ff (take the '1' off the end)
mp_playlist.ff (take the 's' off the end)

This worked for me, where updating drivers, reinstalling and anything else I could think of wouldn't. Hope this helps, it took me a few days to figure it out

 

[levontraut]

Quote:

Originally Posted by Pabloblue;13452012
THIS IS IT!! FOR REALS!!

There are two files, in your steam folder:

mp_playlists_dlc1.ff
mp_playlists.ff

If you change these to:

mp_playlists_dlc.ff (take the '1' off the end)
mp_playlist.ff (take the 's' off the end)

This worked for me, where updating drivers, reinstalling and anything else I could think of wouldn't. Hope this helps, it took me a few days to figure it out

doing this... will it make vac go ape 5h1t and ban u for hacking??

 

[mihau.matecki]

THIS IS IT!! FOR REALS!!

There are two files, in your steam folder:

mp_playlists_dlc1.ff
mp_playlists.ff

If you change these to:

mp_playlists_dlc.ff (take the '1' off the end)
mp_playlist.ff (take the 's' off the end)

This worked for me, where updating drivers, reinstalling and anything else I could think of wouldn't. Hope this helps, it took me a few days to figure it out

i have changed only the file names and iw4mp working properly and i can play again