How to Overcome MW2 Dev Error 657 and Play Like a Pro

If you want to fix the mw2 dev error 657, you should restore the Licenses on PlayStation. So, to do this, you should follow the below steps. 

  • First, your task is to head toward Settings. Then, move to Users and Accounts, Other, and Restore Licences.
  • Now, you should choose Restore. Then, wait until you complete the process. Next, you should attempt to access the content again

What causes this error

The Dev Error codes generally occur when any file is missing, or your game needs any update. Therefore, you should check to ensure that your game is complete and updated. 

How to fix this

Updating windows OS, repairing game files, etc., can help you to fix this common problem. We have given here some procedures through which you can troubleshoot Mw2 DEV Error 657.

1. Update Call of Duty Warzone 2.0
mw2 dev error 657

Your first job is to ensure that your game is updated if you want to troubleshoot the error message. A hotfix was released for the problem troubling multiple users. Your game can update itself automatically before being launched. But it is not possible to perform any update when the game is running. 

So, closing the game and checking for potential updates is necessary. You should follow the steps to get rid of the problem. 

For Steam Players:

  • You should open the Steam client first on the PC.
  • Head toward the Library on the Steam client.
  • You should go to the Library section and tap on Call of Duty Warzone 2. Next, you have to select Update from the drop-down menu.
  • Finally, you should wait till the update is installed. Next, you must launch the game to check if you can fix Mw2 dev error 657. 

For Players:

  • Your first job is to open the client on the computer. 
  • After opening this, tap on Call of Duty Warzone 2.
  • Next, you must hit the gear icon near the Play button.
  • Then, your job is to tap on the Check for Updates option from the available menu.

Thus, you can download and install the available updates. You should launch the game then to check if the problem still persists or not. 

2. Repair Game Files
mw2 dev error 657

Missing game files or damaged files are common causes of the error message on the PC. In such cases, your task is to repair the game files of COD Warzone 2 to fix the problem. However, there is no need to re-download the entire game. You should try the steps mentioned below to repair the game files.

On Steam:

  • Your first job is to open the Steam client on the PC.
  • Then, you need to head toward the Steam window to move to the Library section.
  • Find Call of Duty Warzone 2 there. Next, you should tap on this. Choose Properties from the drop-down menu.
  • After that, move to the Local Files tab on the Properties window. 
  • At last, you should tap on the Verify integrity of game files option so that you can repair the game files. You should wait until the procedure gets completed. Then you need to check if you can fix the issue.


  • Your first job is to open the client on the computer.
  • Then, you must tap on Call of Duty Warzone 2 on the client. 
  • Now, your task is to hit the gear icon near the Play button on the Warzone 2 display. You should now select the option Scan and repair from the available menu.
  • At last, wait until the scanning gets completed. Now, you should check if you can see the error message after completing the scan. 
3. Install Windows Updates
mw2 dev error 657

Always remember that Windows updates are crucial for any system as it keeps them updated with the security patches and latest features. New games mostly need a particular OS version to work properly. 

So, you can face game issues when the OS is not updated. Hence you need to update the windows to circumvent the problem. Remember that updating windows is very easy. You should go through the steps to do so. 

  • Your first task is to hit the Windows key + I on the keyboard to open the Settings app.
  • Once you enter the Settings app, you should move to the Windows Update section, which is available on the left side.
  • After going inside the Windows Update section, your task is to hit the Check for updates button. Thus, you can download available updates & install them. 
  • Then, you need to wait until the updates complete the installation process. Finally, you need to check if the error message still exists or not. 
4. Restore PlayStation Licenses (Playstation Only)
mw2 dev error 657

The PlayStation licenses can cause an error when you play Call of Duty Warzone 2 on a PlayStation. You can access content using the licenses. 

For PlayStation 5:

  • Head toward the Settings menu.
  • Go to Users and Accounts.
  • Move to the Other tab on the left side. 
  • At last, choose the Restore Licenses option.

For PlayStation 4:

  • Open the Settings menu.
  • Head toward Account Management in the Settings menu.
  • Select the Restore Licenses option.
  • Wait until the licenses are restored. After that, check if the issue exists. 

TWILIO ERROR CODE 30003 indicates that the delivery of the message has failed as the destination is unavailable or unreachable. To know more about this error code, click on the given link and go through the entire article:

The ROBLOX ERROR CODE 429 can occur when the service gets too many requests. It is a client-side error. To know more about this error, click on the link and check the entire article: 

frequently asked questions

1. Why does Call of Duty keep giving me a dev error?

You can encounter the error 6661 when you play the game with DirectX 12. So, if you find any ongoing server problem, it may trigger a 6661 error. The issue appears if the game files are corrupted. 

2. Why is Modern Warfare 2 not working?

There are several reasons why modern warfare 2 is not working. So, to get rid of the problem, you must ensure that you have updated all updates. It is especially for PS5, PS4, or Xbox users. If you see the patches are downloading still when you boot into the game, it may lock out of the game’s online portions. Ensure that you have downloaded all updates & installed them before booting up.

3. What Nvidia driver do I need for MW2?

You need the recommended driver version, 526.86 for Call of Duty: Modern Warfare II. Besides, you need 22.9 for AMD. 

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