iw3mp.exe is not a Microsoft Windows operating system executable file, it stands for infinity ward 3 multiplyer.execute. It’s obvious; the iw3mp.exe executable file is not an essential executable file for your operating system.

You can face the name of the iw3mp.exe file while launching or exiting the multiplayer portion of Call of Duty 4 which is called COD4, as it shows an error stating the stop of work of the iw3mp.exe executable file. Don’t worry this error isn’t a big deal. Just begin restarting your system and check if the error persists in showing up then try solving the error as follows:

This error can be solved in two ways, either to reinstall the game or to update the system drivers. Well, to know how to avoid this error message and for taking a step forward to solve it you must know which sound card is installed on your computer. As for the Realtek onboard sound card while using Windows Vista then the Microsoft Audio Drivers 6.0 is recommended for usage but if you are installing the Sigmatel onboard sound card, you will be in need for installing the Windows Vista Updates and the latest Sigmatel drivers. And if you care running the game from a secondary partition you would better download the latest BIOS updates suiting your motherboard, you can find these updates at your motherboard manufacturer web site.

Incase of removing your sound card drivers, you can open your computers’ control panel from the start menu and check your programs tool to find the sound card driver, if not there then check the system tool and on the device manager find your sound card driver under the sound, video, and game controllers section, right click the sound card driver and reinstall it.

Some would try to replace the mss32.dll file so that to solve the appearance of the error stating the stop of work of the iw3mp.exe executable file, the mss32.dll file is used by the Miles sound system, you can find a download containing the mss32.dll file in the following link: http://www.radgametools.com/mssdown.htm. This replacement is supposed to solve the problem and find no crashed while playing the game even for hours of playing.

If all the above attempts never made sense with your case and still you get the error while playing the game then it is most probably you have faulty copy of the game disc which needs a replacement. Sorry for that, but maybe you bought or copied it from a non trustful place.

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