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Installation (Windows)

Before installing IW4x, you need to obtain a legitimate copy of Call of Duty: Modern Warfare 2 (2009) from Steam.

The recommended way to install IW4x, with automatic updates included!

Find Call of Duty: Modern Warfare 2 (2009) and Call of Duty: Modern Warfare 2 (2009) - Multiplayer in your Steam library, click each and select Install. Wait for the downloads to finish before you continue!

Windows 8.1/10/11

Your game folder is located in your SteamLibrary, you can find it through Steam by selecting Call of Duty: Modern Warfare 2 (2009) in your library, right-clicking it and selecting Manage -> Browse local files.

Browse local files

4. Move the IW4x Launcher to your Game folder

Section titled “4. Move the IW4x Launcher to your Game folder”

Grab the iw4x-launcher.exe from your Downloads and move it to your Game folder.

Browse local files

Double-click the Launcher in your Game folder, a Console window will pop up and show you progress of the Installation. Once it’s finished the game will start automatically.

Always use the iw4x-launcher.exe or the IW4x Desktop shortcut to start IW4x and automatically receive updates!

Browse local files


Having issues with the installation process? Join our Discord server for help!

Discord Server