Modern Warfare 2 – How To Fix Unsupported Windows OS Error

When attempting to launch Call of Duty: Modern Warfare 2 on a PC, some gamers encounter the Unsupported Operating System error.

The error reads something like this: “Call of Duty: Modern Warfare II does not support your operating system, Windows 7/8/10/11. Upgrade to Windows 10 version 1909 or higher, as recommended.” Know how to fix this error by reading this guide.


How To Fix Unsupported Windows OS Error in COD MW2

Players of Call of Duty®: Modern Warfare® II are thrust into a historic global struggle that welcomes back the venerable Operators of Task Force 141.

Players will be deployed alongside pals in a totally immersive experience, participating in everything from small-scale, high-stakes infiltration and tactical ops to highly classified missions. 

With brand-new gun handling, an improved AI system, a new Gunsmith, and a host of other gameplay and graphical advancements, Modern Warfare 2 offers fans cutting-edge gameplay. 

With a world-traveling single-player storyline, intense multiplayer combat, and a story-driven, co-op Special Ops experience, Modern Warfare 2 will no doubt be one of the big games of the year.  

This game might have material that isn’t suitable for all audiences, and it shouldn’t be viewed at work. Contains Regular Bloodshed or Violence, Overall Mature Content. 

The Fix


For Windows 7/8

Make sure COD MW2 is not running in Windows 7/8 compatibility mode if you are using Windows 10 or Windows 11, yet the problem message claims you are using Windows 8 or Windows 7. Take these actions:

  • Go to the installation folder for Call of Duty: Modern Warfare II.
  • Go to Steam: Library > Right-click Call of Duty: Modern Warfare II and select Manage.
  • Then select Browse local files.
  • From Games > Choose Call of Duty: Modern Warfare II > Options > Display in Explorer
  • Right-click the cod.exe program.
  • Choose Properties
  • Afterward, go to the Compatibility tab.
  • Uncheck the “Run this program in compatibility mode for” box to disable compatibility mode.
  • Press the OK button now.

You should also turn off Steam/ compatibility mode if the problem continues. Remember to first log off of and Steam.

  • The default Steam location is C:/Program Files (x86)/Steam/steam.exe
  • The default directory for is C:/Program Files (x86)/ 

For Windows 10

If you use Windows 10 or Windows 11 and get the Unsupported Operating System problem, you should update your operating system to the most recent version. For a Windows 10 update:

  • Click the Start button.
  • The Settings menu will open when you click the cogwheel.
  • Access Windows Update by going to Update & Security.
  • Press the Updates check button.

For Windows 11

For a Windows 11 update:

  • Go to Settings and then click Windows Update.
  • The Check for Updates button should be clicked.

This advice should be helpful. Please leave a comment below to share your experience.

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Last Updated on February 2, 2024

8 thoughts on “Modern Warfare 2 – How To Fix Unsupported Windows OS Error”

  1. Unchecking compatability mode for windows 8 in game.exe and battlenet didn’t work on windows 11 for me.Only fix is reinstalling anytime i want to play mod war 2022,vanguard,cold war,mod war 2019 campaigns lol.Ridiculous

  2. I’ve spent more time trying to get this garbage game to launch than actually playing it. I’ve updated everything, uninstalled, reinstalled, unchecked compatibility and I still get the same error message when launching the game from Steam.

  3. It’s stupid that they’re forcing people to use the latest version of Windows 10 instead of letting people play on any Win10 and latest Win8. Fascist scum won’t even let you play a crappy expensive game.

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