How to Fix Modern Warfare 3 Not Launching Issues

Tahmid Shihab Murshed
By Tahmid Shihab Murshed
4 Min Read
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Is Modern Warfare 3 not launching? Then rest assured, as we try our best to explain how to fix this issue.

Call of Duty Modern Warfare 3 has been released worldwide for all platforms. Till now, the game’s launch has been smooth. However, a few players have reported in-game issues, such as the game not launching.

Many players have reported that their game is not launching for the PC versions on Steam and This has left many players unable to boot up the latest addition to CoD HQ. If you’re facing this rampant issue, here’s how to fix it in the quickest way possible.

Read More: What is Modern Warfare 3’s Game Size: Download Size, Updates, & More

How to Fix MW3 Not Launching Issues

There are many ways to fix this issue in Modern Warfare 3. However, we have managed to narrow down it to the most effective ones. Let’s take a look at all the methods we can use to fix the game not launching issue in Modern Warfare 3:

1) Verifying the Integrity of Game Files

The first way to fix any game-related issues on Steam or is to verify the integrity of game files. By opening the game’s properties and going to Installed Files, you will find the option to verify game files. Upon verification of the game files, Steam or finds out the corrupted game files and redownloads them. Initially, the verifying game files will fix this error code most of the time.

Modern Warfare 3 Not Launching

For users, to verify game files, click Options, then Verify Integrity of Game Files. Just like Steam, will also scan for corrupted game files. If found, they will replace them by redownloading those game files.

Modern Warfare 3 Not Launching
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2) Running the Client as an Administrator

Running the clients (Steam and in administrator mode might fix the game not launching issue. It can be done by right-clicking on the Steam or client program on your Desktop or Start Menu and then launching the game from the client.

3) Updating Graphics Driver

An outdated graphics driver is also responsible for this error code in Modern Warfare 3. Here’s how to update the graphics driver for NVIDIA and AMD:

  • For Nvidia users, go to your GeForce Hotfix Driver Version 546.01> Download and Install.
    • If the driver doesn’t solve the issue, roll back to any past drivers starting from Version 540.01.
  • For AMD users, Go to AMD Drivers and Support page> Select Product type> Series> and specific version and press Submit. Download and install the latest driver from the list.

4) Reinstalling the Game

If none of the methods above work, then the last option is to reinstall the game. Reinstalling the game will most probably fix the not launching issue. However, if the game still fails to launch, then we recommend you wait until Sledgehammer Games releases a patch fixing this issue.

Stay frosty, and hopefully, our fixes will help you get back into action in Modern Warfare 3 at the earliest.

Read More: Modern Warfare 3: How to Fix XP Tokens Not Working

Tahmid Shihab Murshed is an FPS writer at GameRiv. Born with a knack for gaming, he has played all types of games out there. He has a heartfelt love for Call of Duty, and other shooter titles out there.