Easy Ways To Fix COD Warzone Dev Error 6661

Warzone Dev Error 6661

The much-awaited merge of  Call of Duty: Modern Warfare and Black Ops Cold War with the online battle royale Warzone has finally happened.
Now, the three of the best first-person shooter video games are working together and have a lot to offer including the fact that the merger allows the players to have a battle pass and XP progression across all three gaming titles easily.
However, now it looks like that some unlucky players are facing troubles with the COD Warzone Dev Error 6661,6036 and many others.

Many bugs and errors have been included by the Call of Duty Warzone, which is highly unlikely of them to do so.
The dev errors are the ones that prevent the gamers from joining the online matchmaking whatsoever quite frequently.
It is unlikely to expect such problems from a reputed franchisee like call of duty and it has led the agitated players to report the issue on various social forums to get it fixed as soon as possible.

Similar to the dev errors, the latest dev error 6661 is also creating a hindrance in the game and does not allow the players to join online matchmaking across all three titles like Modern Warfare, Black Ops Cold War, Warzone in the Season One battle pass.
Sadly, no actual reason is available as of now regarding the new error code , which starts appearing during the Call of Duty online multiplayer sessions.

Fix COD Warzone Dev Error 6661,6036,6164,6065 And More

Steps To Fix COD Warzone Dev Error 6661

Here, we will tell how you can fix the COD modern warfare warzone Dev error 6661.

Fix COD Warzone Dev Error 6661,6036,6164,6065 And More


As per the numerous reports submitted on the Activision Support forum, it looks like after getting the new Season One patch update, a large number of players are confronted with the dev error 6661 issue on their PCs.
The game keeps crashing every hour or so, which is indeed very annoying.
The gamers have also shared their dev error 6661 issue on the Warzone subreddit which suggests that in every 4-5 hours of gameplay, this particular error code is appearing.
Re-installing the game or updating the graphic cards do not work on this issue either.
So, we have come up with certain options which you can perform:

1. Powercycle Your PC or Console

By performing a complete power cycle on your gaming device will clear temporary glitch or cache-related issues very easily.
Power cycling the PC also works if your device is facing networking issues like server connectivity errors or matchmaking issues.

  • Firstly, you have to turn off your console or PC.
  • When it is completely turned off, disconnect the power cord from the device as well as from the power source.
  • Then, you have to wait for at least 30 seconds and plug back the cable in.
  • Wow, you have to restart your computer or console and try checking the dev error 6661 again.

2. Power Cycle Your Router

Similar to power cycling the PC or the console, power cycling the wi-fi router also helps in fixing the glitches.
So, if you are pretty sure that your PC works smoothly and its your router which may be causing the connectivity issues, then try power cycling it.

In order to power cycle your PC:

  • Firstly, you have to power off your router, either directly from the power source or by pressing the ON/OFF button at the backside of the router (if any).
  • Once, fully shut down, you have to remove the power cable from the main source.
  • Then , wait approximately for a minute and then plug back the cable in.
  • Now, finally turn on the router > Connect your console / PC to the Wi-Fi and check if the issues has been resolved.

3. Try To Restart Your PC or Console

Rebooting your gaming device is quite frustrating when you are in the middle of a game.
However, this is one of the most effective methods to treat technical glitches.
You simply have to shut down and restart your PC or Console, and if it does not work, then you should opt for another method.

4. Cross-Check Your Internet Connection

It is highly suggested to cross check whether you have an active internet connection or not, and if yes, then whether your network strength is fine and speed is fast enough or not. 
As a slow internet connection, may lead you to be confronted with plenty of online connectivity issues while streaming or playing online games.

You can check the connectivity of your internet in the Settings > Internet/Network option.

5. Update Your COD Game

Updating games always help in avoiding the glitches and provides you a good gaming experience.
Though, in some cases, updating a game brings bugs and other glitches but that is not always the case.

To update your COD, follow the below-given instructions:

  • The PC users have to open the Battle.net (Blizzard) launcher.
  • Then, click on the ‘Blizzard logo’ that appears on the top left corner of the screen.
  • Now, go to the ‘Settings’ > ‘Game Install/Update’.
  • Scroll all way down > Make sure that the ‘Apply latest updates and download future patch data for recently played games.’ option is checked.
  • Finally, you have to click on ‘Done’ to save changes and restart your launcher once.
  • It’ll automatically try updating all of the games that have been installed on your PC including Modern Warfare, Black Ops Cold War, Warzone, etc on the Battle.net client.

6.  Repairing the Game Files (PC)

A missing or a corrupted game file can also cause trouble in your gaming experience.
Such absent or corrupted files can cause multiple issues with the gaming on the PC during updating the game, installing the game, etc.
So, we also recommend to check and repair the COD game files via the Battle.net launcher (Blizzard).

For the process:

  • You have to open the Blizzard Launcher (Battle.net client) on your PC.
  • Now, click on the Call of Duty: MW game from the left panel. [Choose your respective game]
  • Next, select OPTIONS (Gear icon) > Click on Scan and Repair.
  • Click on Begin Scan and wait for the process to complete.
  • Once done, close the Battle.net launcher and restart your PC.

Once you are done with the process, try running the Season One game and check if the COD Modern Warfare Warzone Dev Error 6661 has been fixed or not.

7. Update PC or Console Firmware

It is better to keep the firmware of your gaming device updated.
An updated firmware is more compatible with your latest games.
To update the firmware, move to the settings menu of the respective gaming device platform and check for the firmware update.
If there is any update available, just install the update.

8. Reinstall the COD Game

According to plenty of players, reinstalling the COD has helped them to eliminate the error.
So, you can also give it a try.

  • Firstly, you have to click on Start > Type Control Panel and click on it from the search result.
  • Then, click on Uninstall a program > Search for the Modern Warfare or Warzone game from the list.
  • Now, Right-click on the game and select Uninstall/Repair.
  • If prompted, confirm the process and follow the on-screen instructions to complete the removal process.
  • Once it is done, then restart your computer > Visit the Blizzard Launcher (Battle.net).
  • Search for the Call of Duty game > Download and Install it.
  • Finally, run the game and it should work without any issues.

While the console users can also reinstall the respective Call of Duty game from the PlayStation Store again.

However, if none of the above methods worked for you, then you should wait for the official patch fix and keep reporting on Activision Support for further assistance.
We’ll keep updating this article if there is any new report or update arrives.

Feel free to discuss your queries with us in the comment box.

Leave a Reply

Your email address will not be published. Required fields are marked *