It is not new to receive dev errors when playing Call of Duty Modern Warfare or Warzone and Dev error 1202 is one of the most annoying errors you might meet when gaming. Luckily, you can find some useful solutions in this post on MiniTool Website to solve get rid of this error easily and quickly.

Dev Error 1202 Modern Warfare

You may complain that you meet an error code called Dev error 1202 when playing Call of Duty Modern Warfare or Warzone over and over again on your PC or console. Don’t worry, this error is not impossible to get rid of. As long as you try the solutions mentioned in this guide, your problems will be fixed easily.

How to Fix Modern Warfare Dev error 1202 Windows 10/11?

Fix 1: Host Modern Warfare as a Free Player

This method is proven to be the best solution to Dev error 1202. Usually, this error occurs when a player with a full version of Modern Warfare tries to connect with free multiplayer lobbies. If you own a full game, you are not supposed to host the lobby. In this condition, you can join the game that is hosted by a free player.

Step 1. Let the free player in your team host the game and then send you an invitation.

Step 2. Join the game via the invitation.

If there are no free players in your team, you can click here to create a free account and then host the game with the new account.

create a free account

Fix 2: Update the Game

Another culprit of Dev error 1202 is outdated game installation. Due to potential incompatibilities, the operating system will block the execution of the essential game modules. Therefore, it is recommended to update the game to the latest build.

Step 1. Launch Battle.net and find Call of Duty Modern Warfare/Warzone in the game library.

Step 2. Press the gear icon to open Options and hit Check for Updates in the drop-down menu.

Step 3. If there is an update available for you, download and install it to see if Dev error 1202 disappears.

Fix 3: Downgrade GPU Driver

Call of Duty Modern Warfare & Warzone will fail to load the essential modules when the latest graphics driver is not compatible with your system. In this condition, you can choose to roll back the graphics driver.

Step 1. Press Win + X altogether to open the quick menu and hit Device Manager.

Step 2. Expand Display adapters and then you can see your graphics card.

Step 3. Right-click on it to select Properties.

Step 4. In the Driver tab, hit Roll Back Driver.

hit Roll Back Driver

Step 5. After the rollback is done, reboot your computer.

Fix 4: Launch the Game in DirectX 11 Mode

If you run the game in the latest DirectX version (DirectX 12), Call of Duty Dev error 1202 will also appear. In this condition, launching the game in DirectX 11 mode might help you out.

Step 1. Launch Battle.net and select COD Modern Warfare or Warzone.

Step 2. Expand Options and choose Game Settings.

Step 3. In Game Settings, tick Additional command line arguments and then type -d3d11 in the box.

Step 4. Hit Done to save the changes.

Fix 5: Reinstall the Game

If all the methods above don’t suit you, the last resort is to reinstall the game. The game installation might be corrupted due to some reason. You should notice that this method is time-consuming but effective. To do so:

Step 1. Open the Battle.net launcher and select the game from the game list.

Step 2. Go to Options > Uninstall Game.

Step 3. Once the uninstallation is finished, restart your computer and relaunch the game to see if Warzone Dev error 1202 is still there.

  • Linkedin
  • Reddit