How to install Plutonium IW5

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  • Introduction

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    Thanks for interest in Plutonium IW5! This guide will cover the installation of Plutonium IW5 for both users who already have the game installed and those who don't.
    Please take the time to read this guide in its entirety, if you encounter an issue along the way please consult the common issues post before asking for help:

    IW5 = Modern Warfare 3
    (Codename for Infinity Wards 5th game)

    I just want to update / already have the game installed?

    If you already have the game installed from steam or had a previous update of Plutonium then you can skip the below section and move onto the Installing the DLC section.

    Installing the base game (Modern Warfare 3)

    Note: This section will cover downloading a FREE copy of MW3. Please skip this section if you already have a copy of the game.

    Please note we highly recommend buying the game if you do not own it, if you enjoy a game you should support it's developers.

    Step 1) Open Steam, if you do not have Steam installed you can download it here:

    Step 2) Go to LIBRARY and from the dropdown menu select TOOLS

    Step 3) Locate Call of Duty: Modern Warfare 3 - Dedicated Server, select it and then click the cog icon then Properties

    Step 4) Navigate to the LANGUAGE tab and ensure the language is step to English this is very important as unfortunately the Steam MW3 Dedicated Server does not support other languages so would result in missing files / errors. (I suggest purchasing the game on a key site if you want the game in your language)

    Step 5) Select INSTALL then Next then Finish
    Now simply wait for the download to complete, you can monitor progress by clicking the DOWNLOADS text at the bottom of Steam. Once the download completes you will have a copy of MW3.

    Installing the DLC

    The section will cover how to download and install the English DLC to get the complete MW3 experience. Note: this DLC will only work on an English copy of the game.

    Step 1) Download the DLC zip archive via the following link

    Note: If MEGA does not work for you, see the IW5 DLC Torrent download


    Step 2) Once the download completes open the zip MW3 DLC [EN].zip

    Step 3) Locate your MW3 game folder in file explorer, by default steam will have installed it into the following location: C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Modern Warfare 3 You can use steam to easily locate your folder:

    Step 4) Now go back to the MW3 DLC [EN].zip file and drag and drop the main & zone folders into your MW3 game folder. If prompted select Replace files in the destination .

    Congratulations the DLC is now installed!

    Plutonium Launcher

    This section will cover installing using the new Plutonium Launcher. This launcher is now used to start the game and is also how updates are applied for our supported games.

    Step 1) Click the following link to download plutonium.exe (The launcher)
    You can save the launcher anywhere you want, somewhere convenient such as your desktop or the game folder.

    Step 2) Open the launcher, if smart screen comes up click More info, then Run anyway



    The launcher will now start the process of installing the client files... This will take some time depending on your internet speed and location in the world.

    Step 3) Enter your forum credentials to login, if you don't already have a forum account you can create one here:


    Step 4) Navigate to MW3 and then hit SETUP and then select your MW3 game folder:

    • If you have followed along with this guide it will be in this location: C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Modern Warfare 3.


    (If you ever need to reselect the game folder, simply click the COG icon next to the PLAY button)

    For those struggling to locate your game folder, this is what the contents of the game folder will look like:


    Congratulations you have completed the installation guide.

    To launch MW3 simply open the Plutonium launcher and select PLAY
    IMPORTANT: This will crash the first time you start the game as it needs to delete a file, this is to be expected, so simply launch again and you won't get the error again! Enjoy

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