Image via Activision/Blizzard

MW2: How to Fix Dev Error 6144 in Modern Warfare 2 and Warzone

Encountering Dev Error 6144 while playing MW2? Here are some potential fixes.

Warzone 2 Season 1 Reloaded is off to a rocky start, with the revival of an error we haven’t had to combat with in ages. In this guide, we’ll go over every way you can possibly fix Dev Error 6144 in MW2.

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How to Fix MW2 Warzone Dev Error 6144

What Is Dev Error 6144 in MW2?

While most issues with online games typically relate to server problems, Dev Error 6144, unfortunately, has to do with the system running MW2 or the game files themselves. Issues that can cause this error include:

  • Out of date drivers
  • Corrupt or missing game files
  • Overlay conflicts
  • Missing game resources
The player running from a helicopter in Warzone
Image via Activision

All Dev Error 6144 Fixes in Warzone and MW2

Since there are multiple potential causes for MW2 Dev Error 6144, it can take a bit of work to resolve it. However, there are a few things you can do to (hopefully) eradicate it.

  • Restart your system: Restarting is the magic cure-all first step that can resolve a lot of tech issues. It’s one of the primary ways to fix Dev Error 6144.
  • Verify your game files: When you verify files, any missing or corrupted files are replaced, which can cause a plethora of potential issues to surface, including this one for Modern Warfare 2 and Warzone.
  • Check/update your drivers: Check that your drivers are up to date. If not, update them to the latest version. Here’s how to update Nvidia drivers and AMD drivers.
  • Disable overlays: Sometimes, the overlays you use can cause conflicts with other programs. Disable any overlays you have running to see if that fixes Dev Error 6144 for MW2.
  • Check your system memory: This doesn’t apply to console players, but MW2 on PC requires a minimum of 8 GB RAM to run, so you want to ensure that you’ve got that much available. Consider closing any non-essential programs via Task Manager. Doing so also reduces the load on your CPU, which can be helpful.
  • Reduce game settings: If your rig only meets the minimum requirements for Modern Warfare 2 or Warzone, you’ll run into issues. Make sure to drop your settings to match those recommended requirements. If you’re running the game on Ultra, for example, with all the fine details turned up, it will stress your system, potentially causing Dev Error 6144.
  • Submit a support ticket: If all else fails, submit a support ticket on the Activision support site with your system information and the error. The team should be able to provide more in-depth help specific to your system or at least look into the issue to remedy it on a larger scale.

That’s it for all ways to fix Dev Error 6144 in MW2 and Warzone. Hopefully this error will calm down over the coming days since it’s so prevalent. Check out more of our Warzone and MW2 guides here on GameSkinny.


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Ashley Erickson
Ashley, otherwise known as Glitchiee, is an avid gamer of RPGs, TTRPGS, farming sims, and survival crafting games. Playing since she can remember, she started on the SNES, GameBoy Color, and collection 1st gen Pokemon cards. Using her passion for gaming, she's written about games for a combined total of 2 years.