To install , the custom client for Call of Duty: Modern Warfare 2 (2009)
Download and install the latest packages from the official Microsoft website. Install both x86 and x64 versions. Game Crashes on Launch
On the main menu screen, click Multiplayer , select Player Name , and input your customized handle. Alternatively, open the developer console using the tilde key ( ~ ) and type: name YourName .
To create a quick shortcut for the future, right-click iw4x-launcher.exe inside the folder, select , and move that new shortcut to your desktop. Always use the launcher to play, as it checks for essential file updates before loading the executable.