How to fix MW3 0x00001338 error code

If you're constantly getting the 0x00001338 error code when launching Modern Warfare 3, you're not alone. While the developers are doing their best to fix the problem, I've got a few simple solutions to help you resolve the 0x00001338 error code in Modern Warfare 3.

MW3 0x00001338 error fixes and solutions

The 0x00001338 error code can appear due to various reasons in Modern Warfare 3, such as faulty or outdated game files, problematic character skins, a corrupted Steam Cache, outdated GPU drivers, or using the CPU’s integrated graphics instead of the GPU.

Thankfully, the Modern Warfare 3 0x00001338 error code can easily be fixed by following these troubleshooting methods:

• Check your system requirements
• Update graphics driver
• Verify the game files
• Reinstall Steam
• Wait for an update

Check your system requirements

To run Modern Warfare 3 without any crashing issues, you should first make sure your PC meets the following minimum system requirements:

• Memory: 8 GB
• Graphics Card: NVIDIA GeForce GTX 960 or Radeon RX 470
• CPU: Intel Core i5-6600 or Ryzen 5 1400
• File Size: 149 GB
• OS: Windows 10 64-bit or higher

If your system does not meet these requirements, you might need to upgrade your hardware in order to play the game.

Update graphics driver

If you continue to experience the 0x00001338 error code, one possible reason could be incompatible drivers. To avoid this, ensure you have the latest drivers by visiting the websites of your GPU manufacturer (e.g. AMD, NVIDIA, or Intel) or using third-party software like Driver Booster to check for updates.

Related: How to change keybinds in CoD MW3

Verify the game files

Video games usually crash when one of the game files is missing or corrupted, and Modern Warfare 3 is no different. Instead of reinstalling the game, verifying the game files is the best way to rule out this case. 

Follow these steps to verify game files in Steam:

1. From the Library section, right-click on the game and select Properties from the menu.
2. Select the Local Files tab and click the Verify integrity of game files... button.
3. Steam will verify the game's files. This process may take several minutes.

Reinstall Steam

Some Reddit users have found the 0x00001338 error code in Modern Warfare 3 can be fixed by reinstalling Steam. But this means you will need to login into your Steam account again and locate all the game files, which is a time-consuming task. If it doesn't bother you, here are the step-by-step instructions:

• Go to your computer's Control Panel, select "Programs and Features," find Steam in the list of programs, and click "Uninstall."
• Go to the Steam website and download the latest version of the Steam installer. Run the installer and follow the prompts to install Steam.
• Launch Steam and log in to your account.
• Click on the "Library" tab in the Steam client to see a list of all your installed games.
• Right-click on the game you want to locate and select "Properties" from the drop-down menu.
• Properties window, click on the "Local Files" tab.
• Click on the "Browse Local Files" button to open the folder where the game files are located.

Wait for an update

If none of the above methods work, there could be an issue with the game itself. In such situations, it's best to wait for the developers to roll out a hotfix or small update to fix the crashing or performance issues. You can also keep an eye on Call of Duty's official social media handles to stay updated with the latest information.

Stay tuned to Pro Game Guides for more Call of Duty: Modern Warfare 3 content. In the meantime, head over to our article on MW3 Beta Patch Notes (November 2023).