Dev Error 356 in MW2 (Modern Warfare 2) : Solved

by Anchal Thakur

Dev Error 356 in MW2: Remember when you could just put a disc in and the game would work right away? Call of Duty: Modern Warfare 2 is the latest game to show that those days are long gone. Players are getting a message saying “Dev Error 356,” which makes their game crash.

Players who have played other games in the series might remember this error message from Call of Duty: Warzone, which came out earlier this year. It mostly affects PC players of Modern Warfare 2, but it has been known to affect Xbox and PlayStation players as well. If this nasty bug has happened to you, there are a few ways to fix the Dev Error 356 error message.

Dev Error 356 In Modern Warfare 2

Dev Error 6015 In Modern Warfare 2

Look for a change

Check to see if there are any updates for Call of Duty: Modern Warfare 2 as your first step. You might have started the game on PC, Xbox, or PlayStation before the latest patch went live, or you might not have automatic updates turned on. If so, just close the game and start it up again. If you are asked to download an update, it should fix the problem.

You should also check Call of Duty: Modern Warfare 2 by hand to see if it needs to be updated. Depending on the system, this is done in a certain way. The update might not have happened because of a problem with your system or because you don’t have enough space on your system. If a new patch is live, you should know about any problems if you check this by hand.

Check the files for your games on Steam

If you play games on Steam, you might want to make sure that none of your game files have become damaged. This is a simple process that can be done by doing the following:

  1. Look in your Steam Library for Call of Duty: Modern Warfare 2.
  2. Click right on the game tile.
  3. Properties will open.
  4. Click on Local Files.
  5. Click on Verify Game Files for Integrity.
  6. Let it be checked.
  7. If you’re on PC, this might fix the problem. But if you still get the Dev Error 356 message or are using the console, we have a few more ideas.

Change the interface language of Call of Duty: Modern Warfare 2 to English

Based on the problem that happened at the beginning of the year in Call of Duty: Warzone and Vanguard, it’s best to change the language settings for your interface. If you’re playing the game in a language other than English, try changing the interface language to English in the settings the next time you load the game. This may fix the Dev Error 356 error.

Make sure your drivers have the latest info

Another problem that might only happen on your PC could be with your GPU or graphics drivers. PC owners know that there are often new driver updates for their hardware, and with a big new game like Call of Duty: Modern Warfare 2, it’s possible that a new driver is already available to download.

It’s not unusual for a driver to come out at the same time as a new AAA game, and it’s likely that one has been made available for Call of Duty: Modern Warfare 2. Check the manufacturer’s website to find out if you need to download a driver. If you do, they should be able to point you in the right direction.

If none of these solutions work for you, you should contact Infinity Ward or Activision’s support team. They will be happy to help you find a solution that works for you.