Call of Duty: Modern Warfare 3

From PCGamingWiki, the wiki about fixing PC games
Call of Duty: Modern Warfare 3
Call of Duty: Modern Warfare 3 cover
Infinity Ward
Sledgehammer Games
OS X Aspyr Media
OS X Aspyr Media
IW 5.0
Release dates
Windows November 8, 2011
OS X May 20, 2014
Call of Duty
Call of Duty 2003
Call of Duty 2 2005
Call of Duty 4: Modern Warfare 2007
Call of Duty: World at War 2008
Call of Duty: Modern Warfare 2 2009
Call of Duty: Black Ops 2010
Call of Duty: Modern Warfare 3 2011
Call of Duty: Black Ops II 2012
Call of Duty: Ghosts 2013
Call of Duty: Advanced Warfare 2014
Call of Duty: Heroes 2014
Call of Duty: Black Ops III 2015
Call of Duty: Infinite Warfare 2016
Call of Duty: Modern Warfare Remastered 2016
Call of Duty Online TBA

General information

Official Call of Duty series site
Call of Duty Wiki - A detailed wiki for every Call of Duty game made.
Steam Community Discussions
Steam Users' Forums


Source DRM Notes Keys OS
All versions require Steam.

Downloadable content (DLC) and expansions

Name Notes
Content Collection 1 Contains Content Pack 1, 2, and 3.
Content Collection 2 Contains Content Pack 4 and 5.
Content Collection 3 Contains Content Pack 6, 7 (Spec Ops portion), and 8.
Content Collection 4 Contains Content Pack 7 (Multiplayer portion) and 9.
DLC for the game consists of 9 Content Packs (each combining 24 Content Drops). See the Wikipedia article for details

Essential improvements[edit]


Game data[edit]

Configuration file(s) location[edit]

System Location
Windows <path-to-game>\players2\*.cfg
config.cfg is for single player, config_mp.cfg is for multi-player

Save game data location[edit]

System Location

Save game cloud syncing[edit]

System Native Notes
Steam Cloud

Video settings[edit]

Graphics option Option WSGF Notes
Widescreen resolution
Set "Image Quality" to Native and use Widescreen Fixer.
Set "Image Quality" to Native and use Widescreen Fixer.
Field of view (FOV)
Default is 65°; use CoD: Modern Warfare 3 FoV Changer.
Borderless fullscreen windowed
Anisotropic filtering (AF)
Change r_texFilterAnisoMin and r_texFilterAnisoMax in the config files
Anti-aliasing (AA)
Up to 4x MSAA
Vertical sync (Vsync)
60 FPS
120+ FPS
Spec Ops and single player are uncapped; multiplayer has a 91 FPS cap.
Color blind mode
Set in Options; changes colors for player names.

Input settings[edit]

Keyboard and mouse Native Notes
Mouse acceleration
Acceleration is on by default, but does not have a setting to turn it off in the menus.
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support

Controller support[edit]

Game pad controllers are not supported by Modern Warfare 3. Please check our controller page for information about how to hack controller support into the game.

Audio settings[edit]

Audio options Native Notes
Separate volume controls
Surround sound
Manually set up to 5.1.
Closed captions
Mute on focus lost


Language UI Audio CC Notes
A Turkish fan patch is available here.


Self-hosted servers are available through the Steam client's server browser or the in-game server browser found under the Servers menu.

Multiplayer types

Type Native Players Notes
LAN play
Online play

Connection types

Type Native Notes
Use iw5mp_server.exe (configure with server.cfg).
Direct IP
Go to the Multiplayer launch options and add +connect followed by the IP.


Protocol Port(s) and/or port range(s)
UDP (outbound) 3074
This game does not support Universal Plug and Play (UPnP) for automatic port configuration.

VR support[edit]

Issues fixed[edit]

A small tweak guide is available at PC Gamer
A collection of potential crash fixes are available at Crash Fixes

Black screen on start-up[edit]

Black Screen on Start-up

With some users, a black screen will display on start-up, though game music can be heard in the background. This is caused by a collision with the Mumble voice client. Within Mumble, be sure to disable the in-game overlay.

PC crashing/freezing in-game[edit]

Reinstall DirectX
  1. Navigate to <path-to-game>\redist\directx\
  2. Run dxsetup.exe
Disable Steam Community
  1. Open Steam
  2. Right click on Call of Duty: Modern Warfare 3 and select Properties
  3. Disable Steam Community In-Game

Game freezes during the intro video[edit]

Game Freezes during the Intro Video
  • Verify the integrity of your Steam game cache.
  • Update DirectX and GPU drivers.
  • Delete ModernWarfare3.bik in the installation folder

Crash to Desktop[edit]

Crash to Desktop
If the game randomly crashes on launch, ensure or try the following:
  • Update DirectX and GPU drivers.
  • Turn off SLI / Crossfire.
  • Use only one GPU first (turn the other one off via your graphics control panel).
  • Disable anti-aliasing and filtering.
  • Disable V-sync.
  • Disable background applications; turn off your anti-virus software.
Turn down sound acceleration (Windows XP)
  1. Navigate to Control Panel -> Sounds and Audio Devices -> Volume -> Speaker settings
  2. Select Advanced
  3. Open the performance tab
  4. Reduce sound hardware acceleration to basic, the 2nd notch from the left.

DirectX error while loading[edit]

DirectX error while loading
  • Change texture quality to automatic in video settings.

Cannot install[edit]

Cannot Install

This is a Microsoft C++ bug so the quick fix is to uninstall your C++ files. If you see 2 instances of Microsoft C++, uninstall both of them. There are also a couple workarounds online if you don't want to uninstall them.

Failed to run install script[edit]

Failed to run install script
This is a common issue with Windows 7.
  1. Locate setup.exe for Call of Duty: Modern Warfare 3 on the install disc and run it as administrator
  2. In Steam right click on COD: Modern Warfare 3
  3. Insert Disc 1 into your DVD drive and close Steam (File -> Exit Steam)
  4. Go to Start and type C:\Program Files (x86)\Steam\steam.exe -install D:
  5. Press okay and continue with the installation

Audio issues[edit]

Disable communications activity sound reduction
  1. Open the Start screen/Start menu, type mmsys.cpl and press Enter.
  2. Go to the Communications tab.
  3. Choose Do nothing.
  4. Click OK to save your changes.

Multi-monitor issues[edit]

  • Unplug other monitors and play on single screen.
  • Try playing in windowed mode.

Nvidia Optimus[edit]

Nvidia Optimus fix
  1. Open Nvidia Control Panel
  2. Open 3D Settings on the left hand side under "Select a task..."
  3. Select Manage 3D Settings
  4. Click Program Settings tab
  5. Under "1" Select a program, click add, and navigate to the MW3 EXE file.
  6. Under "2" Select "High-performance Nvidia processor"
  7. Click apply and launch the game

Fuzzy textures[edit]

Fuzzy Textures

Set Image Quality to "Native", as "Extra" up-scales the textures resulting in poor image quality.

DirectX 9 compatibility with older video cards[edit]

DirectX 9 Compatibility With Older Video Cards

Appended the game laucher with -dx9 to force DirectX 9 compatibility mode.

  1. "seta rRendererPreference "Shader model 2.0"" in the player config for single player or multi-player respectively.

Mouse problems[edit]

Mouse problems
  • Shut down any software used for the mouse.
  • Also try a lower polling rate if the mouse has this function.
  • Turn off FRAPS


  • Go through the building on the right with the broken glass, and stay in there until the end of the offices, and it will auto save.

"Steam Error – 55: This game is currently unavailable. Please try again at another time" error[edit]

Steam Error – 55: This game is currently unavailable. Please try again at another time.
  • Restart Steam
  • Or the computer

"DLC content is required. Required map ... is missing or damaged." error[edit]

DLC content is required. Required map (map name) is missing or damaged
  • Make sure both the single player and multi player versions of the game are installed.
  • Verify integrity of game cache
  • If the problem persists, reinstall the game while the anti-virus is turned off.

System requirements[edit]

Minimum Recommended
Operating system (OS) XP Vista, 7
Processor (CPU) Athlon 64 X2 Dual Core 4000+
Intel Core 2 Duo E4300 1.8 GHz
Intel Pentium Dual Core E6600 3.06 GHz
System memory (RAM) 2 GB 4 GB
Hard disk drive (HDD) 16 GB
Video card (GPU) Nvidia GeForce 8800 GTS
ATI Radeon X1900
256 MB of VRAM
DirectX 9.0c compatible
Shader model 3.0 support
Nvidia GeForce 210
ATI Radeon HD 3650
1 GB of VRAM
Operating system (OS) 10.9.2
Processor (CPU) Intel i3 2.2 GHz
System memory (RAM) 4 GB
Hard disk drive (HDD) 13 GB
Video card (GPU) Nvidia GeForce 640M
ATI Radeon HD 4850
Intel Iris
512 MB of VRAM
The following chipsets are unsupported by the OS X version: ATI Radeon HD 2000 series, ATI Radeon HD 6490M, 6630M, 3870, Nvidia Geforce 9000 series, Nvidia Geforce 320M, 330M, Intel HD 3000, 4000, 5000
Hard drive volumes formatted as Mac OS Extended (Case Sensitive) are not supported