Fixed: Call of Duty Warzone 2.0 Dev Error 6066 on PC [2024]

Warzone players recently start complaining about they are getting Dev error 6066 on Warzone.

This error usually encounters at the time of the launch. This error usually happens when there is a connectivity issue or your game files are corrupted.

Don’t worry about it!

The CPU Guide brings you the best working solution to solve Dev Error 6066.

Solution 1: Check the Server Status

Before trying anything, we recommend it to check the server status of Warzone 2.0

If the servers are down, then this is the main cause behind Dev error 6066 or any other error popping up.

To confirm the server status, you can go to support Activision where they update the players about upcoming maintenance or any technical issue on the server.

If the servers are working fine then follow the next solution.

Solution 2: Scan and Repair Via Battle.Net

Sometimes the software you are using to play Warzone 2.0 may have some corrupted files.

Which lead to Warfare Dev Error 6066.

How do you scan and repair in modern warfare?

So here is how you scan and repair in COD Warzone 2.0:

Make sure the COD Modern Warfare 2 is not running in the background.
Launch Battle.net and select Game from the top menu.
Click on COD Warzone 2.0.
Now click on Options and select Scan & Repair.
Click on Begin Scan.
After the process is complete restart your PC.
And launch your MW2 again.

If this didn’t help you solve then follow the next solution.

Solution 3: Keep your PC Updated

Sometimes your outdated PC is the main cause of the Outdated Wi-Fi Drivers on Windows 11/10.

Outdated drivers in your PC or your current Windows version cannot support the new connectivity parameter of your internet.

As you update your Windows, all the drivers are updated too and this will fix the cannot connect to the server.

So, here is how you can update your PC:

Click on the Windows icon
Click on the Settings icon
A new window will pop up
Select Windows Update from the left menu
The new window will pop up
Then click on Check for updates
If there is any update, it will start updating the PC
After the updating is done check if the COD Warzone 2.0 is solved or not.

If updating your system didn’t work out then try closing unwanted programs.

Solution 4: Close Unwanted Programs on Windows 11/10

If the above solution didn’t work, then closing unwanted programs will help you to eliminate Dev Error 6066 on COD Warzone.

If there are too many programs running in the background that are using too much internet/RAM/Disk and causing the COD Multiplayer Not Working error.

So, let’s close unwanted programs:

Press Ctrl + Shift + ESC keys to open Task Manager
Now check which program is using more Network
Right-click on that program and select End task
And check if the error is solved or not.

If you are still unable to summon someone in your world, then it’s time to verify your game file to check if you have any corrupted files.

Solution 5: Update Graphics Card Driver with Windows Update

Updating the graphic drivers will help you have a better and more stable graphical experience.

Here is how you can update drivers via optional updates:

Click on the Windows icon
Click on the Settings icon
A new window will pop up
Select Windows Update from the left menu
The new window will pop up
Now select Advanced options
Click on Optional updates
A new window will open
Click on the drop-down button for Driver updates
Now, select your desired drivers
Now press the Download & Install button

If you cannot update your drivers through Windows Update, then you can try updating the Graphics Drivers through Device Manager.

Solution 6: Update Graphics Card Driver

We can update outdated graphic drivers in multiple ways.

If you cannot update your graphic drivers by updating Windows, you can try updating through the Device Manager too which in return will fix Dev Error 6066.

Here is how you can update drivers through Device Manager:

Click on the Search icon
Type Device Manager
Click to open Device Manager
Then select the Display adapters
A further menu will open
Right-click on the graphic card name
Click on the Update driver

Rolling Back the Driver:

If you experiencing the COD Dev Error 6066 issue after updating your graphic drivers, then you can roll back the driver’s recent update.

Here is how you can roll back drivers:

Click on the Search icon
Type Device Manager
Click to open Device Manager
Then select the Display adapters
A further menu will open
Right-click on the graphic card name
Click on the Properties
A graphic card properties Windows will open
Navigate to the Driver Tab
There is an option for “Roll Back Drivers”. Click on it
If the option of “Roll Back Drivers” is greyed out, this means that the driver did not update recently.

Solution 7: Disable Antivirus Software

Sometimes the third-party antivirus you installed is preventing you to play Call of Duty Warzone.

So, you need to disable the antivirus for a few minutes to check if the antivirus is preventing COD MW2 Dev error 6066.

In order, to disable the antivirus follow the step below :

disable antivirus Netflix Error Code NW-1-19?

Select the arrow button on the taskbar a Small menu will open.
Then click left on the Avast antivirus icon.
The setting menu will open and select ” Avast shield control “
In a further menu, you will select the “ 10 minutes option“
Now restart the game.

Switch to better anti-virus if the antivirus is causing the COD Dev Error 6066.

Solution 8: Switch To Better Antivirus

If the above solution shows that your antivirus is causing the COD Warfare 2 Dev error 6066 “Multiplayer Not Working” Error then it’s time to change the antivirus.

The CPU Guide brings you the best-discounted deals on Top Tier Antivirus.

I am listing down some Best Anti-Virus with Exclusive discounted offers for The CPU Guide readers.

Hope all the solutions help you solve the Warzone Dev 2.0 Error

If you have any queries or suggestions, feel free to share your experience with us in the comments section down below or you can reach us on our social handles