Step 01

Download Call of Duty 4 MW (Clean Game Files)

Before installing patches, you will need a clean base game folder containing the core Call of Duty 4: Modern Warfare assets. This version is lightweight, clean, and pre-extracted for multiplayer purposes.

  1. Download the clean base multiplayer game files archive using the button below.
  2. Extract the contents of the zip file to your preferred games folder (for example, C:\Games\Call of Duty 4).
Important: This clean game version does not require you to run any installers. Just extract the archive and proceed to the next step.
Step 02

Get CoD4X Multiplayer Patch

CoD4X is a community-driven multiplayer patch that updates your game client to version 1.8. It patches crucial security vulnerabilities, fixes code bugs, and enables automatic background downloading of custom maps, mods, weapon skins, and sound effects when connecting to server networks like Ceylon Warfare.

  1. Download the CoD4X installer executable directly using the button below (hosted by cod4x.ovh).
  2. Move the downloaded installer executable file into your main Call of Duty 4 game directory (where iw3mp.exe is located).
  3. Run the installer executable to apply the patch files and update the client.
Step 03

Provide Multiplayer Keycode

To access multiplayer, Call of Duty 4: Modern Warfare requires a CD key. While CoD4X bypasses global online check validation, the local game engine still demands a validly formatted keycode to allow server connections.

Use one of the pre-verified keycodes below. Click the copy icon next to a keycode to copy it to your clipboard:

SADA-ASD2-2132-SADS-4515
SADA-AASD-21SF-SADS-BB0D
FSA3-AA53-215F-SA46-20A0
FSHG-AJGF-2GJF-JA46-9EDF
  1. Open the game using cod4x_mp.exe.
  2. Navigate to OptionsMultiplayer OptionsEnter CD Key.
  3. Paste your copied keycode into the field, then click Verify.
Step 04

Apply Machannoob Custom Config (CFG)

A professional player configuration (CFG) improves in-game visibility, optimizes multiplayer networking settings (rates/cl_maxpackets), sets custom client binds, enables fullbright maps, and increases FPS drastically.

We recommend downloading and installing the custom Machannoob CFG below:

  1. Download machannoob.zip.
  2. Extract the zip to retrieve the config_mp.cfg file.
  3. Copy the config_mp.cfg file and paste it into your profile folder. The exact path depends on your installation type:
CoD4x Path (Recommended):
Press Win + R, paste the following directory string, and hit enter:
%localappdata%\CallofDuty4MW\players\profiles\
Open your active profile's folder and paste the config_mp.cfg file inside (overwriting the existing one).
Vanilla Game Directory (Fallback):
If you are not running Local AppData profiles, place the configuration in:
[Your COD4 Main Folder]\players\profiles\[Your Profile Name]\config_mp.cfg
Step 05

Connect to Ceylon Warfare Servers

Launch the game via cod4x_mp.exe, press the tilde key (~) on your keyboard to open the developer console, and enter the connect commands below.

Click the copy button on the right to copy the connection string instantly:

CEYLON WARFARE // SEARCH & DESTROY
connect snd.ceylonwarfare.tech:28960
CEYLON WARFARE // TEAM DEATHMATCH
connect tdm.ceylonwarfare.tech:28960
CEYLON WARFARE // SNIPER ONLY
connect snipe.ceylonwarfare.tech:28968
CEYLON WARFARE // WAR SERVER
connect war.ceylonwarfare.tech:28968