Ошибка dev error 6066 call of duty warzone

• 

31 мар. 2020 г.
• 1 min read

Данная ошибка встречается после очередного обновления Warzone, и нигде не написано как ее исправить. Проверка целостности игры через Battle.net не помогает, советуют просто переустановить игру… Но ведь это не дело?
Мне удалось натыкать решение!

Как исправить

Для этого вам потребуется перейти в папку с установленной игрой, а именно по пути:
Call of Duty Modern Warfare\main

В этой папке вам нужно будет удалить 4 файла.
А именно:
– data0.dcache
– data1.dcache
– toc0.dcache
– toc1.dcache

После того как вы их удалите можете перезаходить в игру. Warzone немного подумает и предложит вам перезайти для завершения обновления.

Помогло? Оставляйте комментарии!

Here we can see “dev error 6066”

Both the COD Dev Error 6065 and 6066 can happen thanks to the GPU problems. Infinity Ward has suggested a number of the possible workarounds that are mentioned below:

1. Run VRAM at Maximum

Here are the steps to seek out out the VRAM available.

1. Press the Windows + I keys to open Windows Settings.
2. Click on System> Under the Display section, click on Advanced display settings.
3. From rock bottom of the page, click on display adaptor properties for Display 1.
4. A new pop-up window will appear > you ought to check Total Available Graphics Memory.

2. Increase Virtual RAM

Now, you’ll increase the VRAM on your computer by following the steps below:

1. Enter BIOS by pressing the F2, F5, F8, or Del key repeatedly after the restart.
2. Go to Advanced/Advanced Options (Note: the precise terminology might vary counting on your hardware manufacturer. Open the manufacturer’s manual for guidance.)
3. Now, find Video Settings, VGA Share Memory Size, Graphics Settings, or similar terms.
4. Select Pre-Allocated VRAM and alter the overall value, which will be 64M or 128M. Could you change it to 512M?

3. Force the game to start with DirectX 11

1. Open Battle.Net Client on the PC.
2. Open the game COD Modern Warfare > attend Options.
3. Check Additional instruction Arguments and sort -d3d11 instruction .
4. Exit and check out playing the game. Check if the decision of Duty Warzone Dev Error 6065 & 6066 still appears. If it does, move to a subsequent fix.

4. Restore GPU Defaults

Whether you’re using Nvidia or MSI or AMD GPU card, you ought to restore the clock speed to its default via the MSI Afterburner tool or Zotac firestorm application. Using the default clock speed will make sure the optimal performance of the GPU and increases longevity.

5. Disable Nvidia Overlay

It seems that turning off the Nvidia Overlay application (GeForce Experience) can fix the Dev Error 6066 issue in most cases.

1. Launch the Nvidia GeForce Experience app.
2. Click on the Settings icon (gear) > Under Features, click on General > Disable IN-GAME OVERLAY.

6. Disable Other Overlay Apps

Just like the Nvidia GeForce Experience overlay app, other overlay apps also can cause several performance issues on your Windows computer. It includes Xbox Game Bar, Discord Overlay, Steam Overlay, and more.

Therefore, as a PC gamer, if you’re using Steam or Xbox Game Bar or Discord overlay, confirm to temporarily turn them off and check out running the game again to see for the difficulty.

7. Update Windows OS Build

1. Click on Start > Choose Settings > Select Update & Security.
2. Click on Check for updates if any update is out there, Download and Install it.
3. Once done, the system will ask you to restart your computer to use changes.

8. Set Higher Priority

If the difficulty persists, attempt to set the upper CPU Priority for the decision of Duty Modern Warfare game from the Task Manager.

1. Press Ctrl + Shift + Esc keys to open Task Manager.
2. Now, attend the small print tab > Scroll down and locate the COD Modern Warfare.
3. Then right-click on the task and hover over the Set Priority.
4. Select High from the drop-down list and save changes.
5. Once done, close Task Manager and run the game again to see whether the difficulty has been fixed or not.

9. Use PC Screen Only Option

If you’re using multiple screens connected to your computer, confirm to use the only PC screen only.

• Make sure to exit the decision of the Duty Modern Warfare game.
• Go to Task Manager and shut all the COD processes which are running within the background.
• Now, click on the Notification icon from the System Tray of the Taskbar.
• Click on Project > Choose PC Screen only.
• Finally, try running the game again.

10. Disable RTX (Ray Tracing)

Call of Duty Modern Warfare only features a single setting for its ray tracing support. First, attend the in-game Settings > Head over to Graphics > Under the Shadow & Lighting option, Disable DirectX Raytracing.

11. Reinstall DirectX

As DirectX is one of the main important parts for the Windows OS to run apps or games smoothly, we’ll highly recommend you to update your Windows to its latest version & build. Once done, you’ll try reinstalling the DirectX version via the DirectX Installer from the official Microsoft website.

12. Scan and Repair Game Files

If your game files are somehow missing or corrupted, verify and repair the game files properly using the Battle.net client.

1. Launch the Battle.net client > Click on Call of Duty Modern Warfare.
2. Click on Options > Select Scan and Repair.
3. Choose Begin Scan.
4. Wait for the scanning process to finish.
5. Once done, restart your PC and run the game.

13. Disable Crossplay

Disable “Crossplay” within the game settings; you’ll find this feature by navigating to the choices menu then opening the Account tab. This may make sure that your game isn’t running on the crossplay mode.

14. Reset CPU/GPU Clock Speed

If you’ve overclocked your GPU speed and experiencing dev errors or maybe crashing issues with the fashionable Warfare/Warzone gameplay or while launching, confirm using the MSI Afterburner tool or Zotac firestorm underclock or set the default clock speed. Now, you’ll try again to run the game, whether it’s working or not.

15. Check Internet Connection

Sometimes poor internet connection causes dev errors. First, check and refresh your internet connection. This seems small, but it’s going to become the biggest reason for errors.

1. Open the in-game Settings menu > attend Options.
2. Click on the general tab > Head over to the Telemetry section.
3. Select Server Latency and switch it on.

16. Reinstall COD Modern Warfare

If none of the methods worked for you, try simply reinstalling the fashionable Warfare game from your computer. You’ll uninstall it via the Battle.net launcher and reinstall it again.

1. Launch the Battle.net (Blizzard) client > Head over to the game Library.
2. Click on the decision of Duty: Modern Warfare.
3. Click on Uninstall Game from the choices category.
4. Once the game is removed, restart your computer.
5. Now, open the Battle.net client again and download/install the COD Modern Warfare again.

User Questions:

1. dev error 6066

I want to play warzone. I even have intel hd graphics 4600, 8gb ram, intel i3 6th gen processor. Once I run the game, it shows dev error 6066………what should I do now?pls help

2. Error Dev 6066 call of recent warfare

Hello Guys, it seems that some specifics graphics cards aren’t ready to launch the game without having a fatal DirectX error.

Is that possible to preview a fast patch to unravel that issue? Sounds not acceptable to be stuck due to some parameters.

3. Dev Error 6066

I am getting a dev error whenever I attempt to hook up with the game since the update. I’m on PC and have scanned the game files multiple times, restarted Battlenet, started in safe mode, and restarted my computer. The same error whenever it tries to attach online at the house screen says Directx encountered an unrecoverable error. Has anybody had this and located a fix for it? Any help would be appreciated. Thanks.

4. Call of Duty: Modern Warfare Direct X crashes

My modern warfare is direct x crashing very, very frequently, leaving the game virtually unplayable. Some errors include Dev 6068, 5763, and 6065. Does anyone have insight into how to fix this? Is that a Microsoft issue, a graphics card issue, or an infinity ward issue? I even tried flashing my bios, turning off one monitor, leaving my settings at default settings, and ensuring all GPU drivers were up so far. Any insight would be amazing, thanks.

The Call of Duty Warzone Dev Error 6065 & 6066 can be attributed to a GPU problem as well as the dev error 6068. The error usually occurs during cutscenes in the campaign but can arise anywhere. This is what Infinity Ward postulates. However, it’s not reassuring for a gamer looking to dive into the game. Some fixes recommended by Infinity Ward is to run VRAM at max and running the game with default settings.

Tuning down the GPU performance has helped a number of users and Infinity Ward is working on a hotfix to be released in the next patch. But we suspect in most circumstances the cause of their error is probably local; hence, you will have to resolve it from your end.

We scoured through various forums looking for fixes that have resolved the error for users. Here is the list of fixes we discovered.

Fix 1: Run VRAM at Maximum

As this is a fix recommended by the developers, it’s best we try this first. There are two ways to increase the video RAM on the PC via the BIOS and through the Registry Editor. In this guide, we will increase the VRAM via BIOS, but first, we need to find the VRAM available on the graphics card.

Here are the steps to find out the VRAM available.

1. Click Windows + I > System
2. In Display, locate and click on Advanced
   display settings
3. At the bottom of the page, click on Display adapter properties for Display 1
4. From the new window, check Total
   Available Graphics Memory.

Now that you
know the available memory, let’s increase it from the BIOS. This is the most
effective method to increase the VRAM. Here are the steps:

1. Enter BIOS by pressing F2, F5, F8 or Del key repeatedly after the restart.
2. Go to Advanced/Advanced Options (Note: The exact terminology might vary depending on your hardware manufacturer. Open the manual of the manufacturer for guidance.)
3. Now, find Video Settings, VGA Share Memory Size, Graphics Settings, or similar terms.
4. Select Pre-Allocated VRAM and change the existing value which by default will be 64M or 128M. Change it to 512M

Now, Save the changes
and restart the computer and try launching the game. The Call of Duty Warzone
Dev Error 6065 & 6066 should have disappeared.

Fix 2:  Running
Warzone with Default Settings

Although you can
change the game to default settings from the Battle.Net client, we advise that
you uninstall and reinstall the game. It may require you to download over 100
GB of game files, but the reinstalling process will eliminate errors if any
during the initial install. Try reinstalling the game and keep the game
settings at default. Now, play the game and check if the dev errors still
appear.

Fix 3: Force the Game to Start with DirectX 11

As this error mostly occurs on Windows 10 and Xbox One, both using the new DirectX 12, which itself has been known to be broken, switching back to DirectX 11 to play the game has worked for a lot of users. DirectX 11 is a more stable version, but you will have to sacrifice some features which DirectX 12 brings; however, not extreme. So, let’s force the game to run in DirectX 11 mode. Here are the steps.

1. Open Battle.Net Client on
   the PC.
2. Open the game COD Modern
   Warfare
3. Go to Options
4. Check Additional Command Line
   Arguments and type -d3d11
5. Exit and try playing the game. Check if the Call of Duty Warzone Dev
   Error 6065 & 6066 still appears. If it does, move to the next fix.

Fix 4: Run GPU at Stock

As we browsed through the forums, we found another culprit for the dev error 6065 & 6066, the overclocking of GPU using NVIDIA GeForce Experience, MSI Afterburner, or other software. Tuning it down or underclocking fixed the problem. Underclocking is known to reduce heating, increase the stability of the PC and promote compatibility, so it’s not that surprising that this might fix the error code 6068. If you have overclocked, try running the GPU at stock and the error may be resolved.  

Fix 5: Turn off Nvidia Overlay

“The GeForce
Experience in-game overlay enables you to access GPU-accelerated video
recording, screen-shot capture, broadcasting, and cooperative gameplay
capabilities.” This feature can interfere with the game graphics and cause the
dev error 6068. You can disable the Overlay for Nvidia graphics card through
the GeForce Experience to fix the problem.

1. Launch the GeForce Experience
   Application
2. Click on the settings Gear
   icon on top-right
3. From the General tab,
   under Features, locate and disable IN-GAME OVERLAY.

Fix 6: Update Windows to the Latest Build

Updating the
Windows OS to the latest built has also fixed the problem for a lot of users.
So, go to Windows Update and Security and check for updates, if available,
update the OS and try playing the game. The error should not appear anymore.

Fix 7: Set Game to Windows Borderless to Fix Call of
Duty Warzone Dev Error 6065 & 6066  

If the above
steps have not fixed the dev error 6065 & 6066, you may want to set the
game to Windows borderless, this has resolved the error for users on various
forums including Nvidia and Reddit. When the game initially released in Beta,
it had only this mode, so the original code could be designed for this.

Fix 8: Set game to HIGH CPU PRIORITY on Task Manager

If still the Call
of Duty Warzone Dev Error 6065 & 6066 is persistent, you may want to try
setting the game to high-priority on CPU usage via the Task Manager.  

The above 8 fixes should have resolved the dev error 6065 & 6066. Most users fixed their problems by reducing their graphics settings such as lower texture detail, particle effects, and shadow mapping. Try going all low setting to troubleshoot the problem, besides the fix we have discussed.

Read More COD Warzone Content:

• Guide: Call of Duty Warzone Buy Stations
• Fix Call of Duty Warzone Error Code 263234 & 262146
• Fix COD Warzone Connection Failed / Server Down Error
• Fix Warzone Dev Error 6068 in COD Modern Warfare
• Fix COD Modern Warfare Warzone Dev Error 6178
• Fix Call of Duty Warzone Dev Error 6328 in COD Modern Warfare

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.

Read More: Call of Duty Modern Warfare 2 Not Launching Issue On Windows 11/10

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:

1. Make sure the COD  Modern Warfare 2 is not running in the background.
2. Launch Battle.net and select Game from the top menu.
3. Click on COD Warzone 2.0.
4. Now click on Options and select Scan & Repair.
5. Click on Begin Scan.
6. After the process is complete restart your PC.
7. 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:

1. Click on the Windows icon
   
2. Click on the Settings icon
3. A new window will pop up
4. Select Windows Update from the left menu
   
5. The new window will pop up
6. Then click on Check for updates
   
7. If there is any update, it will start updating the PC
8. 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:

1. Press Ctrl + Shift + ESC keys to open Task Manager
2. Now check which program is using more Network
3. Right-click on that program and select End task
4. 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:

1. Click on the Windows icon
   
2. Click on the Settings icon
3. A new window will pop up
4. Select Windows Update from the left menu
   
5. The new window will pop up
6. Now select Advanced options
7. Click on Optional updates
   
8. A new window will open
9. Click on the drop-down button for Driver updates
10. Now, select your desired drivers
11. 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:

1. Click on the Search icon
2. Type Device Manager
   
3. Click to open Device Manager
4. Then select the Display adapters
5. A further menu will open
6. Right-click on the graphic card name
7. 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:

1. Click on the Search icon
2. Type Device Manager
   
3. Click to open Device Manager
4. Then select the Display adapters
5. A further menu will open
6. Right-click on the graphic card name
7. Click on the Properties
   
8. A graphic card properties Windows will open
9. Navigate to the Driver Tab
10. There is an option for “Roll Back Drivers”. Click on it
11. 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 :

1. Select the arrow button on the taskbar a Small menu will open.
2. Then click left on the Avast antivirus icon.
3. The setting menu will open and select ” Avast shield control “
4. In a further menu, you will select the “ 10 minutes option“
5. 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.

1. Vipre (Save up to $100)
   
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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

Dev Error 6066 is encountered when Call of Duty: Warzone players attempt to launch the game on PC or when they’re in the middle of a multiplayer game. The issue is exclusive to PC and is confirmed to appear on both Windows 10 and Windows 11. 

Before troubleshooting, you should first ensure that your GPU has enough VRAM to support the rendering of COD Warfare. If your system specs are sufficient, other potential causes include a potential 3rd party interference, game file corruption, outdated GPU drivers, unstable overclocking or a situation where a second monitor is forcing the game to run on the integrated GPU.

Here’s are several confirmed fixed that should help you fix the issue:

1. Check the minimum specifications

Before you move to more down to all the other confirmed fixes below, start by cross-referencing your PC specks against the minimum requirements of Call of Duty Warzone. 

Start by consulting the image below and check if you meet the minimum GPU, CPU, RAM, HDD, and Network requirements.

If everything looks good, dive deeper into your GPU specs before moving down to the next method below. 

One of the most common causes that will trigger this 6066 DEV error is insufficient VRAM. 

Note: Remember that VRAM is a special type of RAM designed specifically for GPU. It has nothing to do with regular RAM.

Call of Duty Warzone requires a minimum of 2 GB of VRAM to function properly on Windows 10 and Windows 11. If your GPU is below that threshold, you will not be able to get past the 6066 DEV error even if you follow every other fix featured below. 

Here’s a quick guide on checking the available VRAM on your current GPU:

1. Press the Windows key + R to open up a Run dialog box. 
2. Next, type ‘dxdiag’ inside the text box, then press Ctrl + Shift + Enter to open up the DirectX Diagnostic tool with admin access. 
3. Click Yes to grant admin access when the User Account Control (UAC) is prompted. 
4. Inside the DirectX Diagnostic Tool, use the vertical menu at the top to click on Display 1 (or the main display you use when attempting to play the game).
5. With the main display selected, go under Device and check the Display Memory count. 

   Note: If the Display Memory count is over 2000 MB, you are above the threshold, and your GPU should be able to handle the game. If not, you will not be able to play the game unless you upgrade to a better GPU. There are modded drivers that might help you if you’re just below the limit, but our recommendation is to avoid them since most of them are riddled with malware, and the game experience will be poor since your specs are below the recommended values. 

If your GPU has more than enough available VRAM to play the game, but you’re still experiencing the 6066 DEV error, move to the first fix below. 

2. Perform a Clean boot

Call of Duty Warzone may be affected by a huge variety of third-party programs, making it challenging to pinpoint the exact origin of the problem. Overlay programs, system optimization suites, and overprotective security suites are at the top of the list. 

Because of this, the best course of action is to discover the culprits by restarting your computer in clean mode and determining whether the problem is still present. 

Note: A clean boot will force your PC to start without third-party services and processes. 

If the issue no longer occurs while in clean boot mode, it’s clear that a 3rd party process or service is some home triggering the 6066 DEV error.

For detailed instructions on achieving a clean boot state on Windows 11, follow the steps outlined in this article. If you’re on Windows 10 still, use this guide instead. 

Once a clean boot state is achieved, launch COD Warzone and see if the issue is still occurring. 

If you can launch the game normally, start re-enabling all the processes 3rd party processes that you previously disabled until you successfully identify the culprit. 

If the problem is still occurring even when you clean boot, move down to the next method below. 

3. Scan & Repair the Call of Duty: Warzone

If you already made sure that there’s no interfering process or service causing this issue, the next thing you should troubleshoot is a potential file corruption affecting the game. 

Fortunately, you can use the Scan & Repair feature on Battle.Net to scan & repair your game installation folder in case it’s affected by file corruption. This operation will examine every game file & associated dependency and replace every corrupted file with a healthy equivalent. 

Follow the instructions below to begin a Warzone game repair procedure using the in-game Battle.Net settings:

1. Make sure Call of Duty is turned off and not running in the background.
2. Open Battle.Net and sign in with the game-related username and password.
3. In the left-hand section of the main Battle.Net interface, pick the game you want to choose.
4. Select Scan and Repair from Settings (the gear symbol) to check the file integrity and fix Call of Duty (from the context menu that just appeared).
5. Confirm the procedure at the next screen, then wait patiently while the scan and repair are completed.
   When the process is finished, restart the game to see if the problem has been fixed.

If the problem still exists, scroll down to the next suggested solution below.

4. Unplug the second monitor (if applicable)

If you’re using a two-monitor setup, you can expect to deal with this issue as you launch the game on a monitor using the integrated GPU (instead of the dedicated solution).

This issue is frequent with laptop models that are automatically wired to use the dedicated GPU on the main display and the integrated GPU on the secondary display. If you configured the game to run on the secondary display on a setup like this, you would most likely experience the error 6066 as the integrated GPU doesn’t have the required VRAM to render the game.

One simple fix in this particular case is to unplug the secondary display. This will automatically force the game with the most powerful GPU available.

Note: If this method is successful, reconfigure the game to run on your main display, so the primary GPU is used. 

If this fix was not applicable or it didn’t fix the issue, move down to the next method below. 

5. Update the GPU driver to the latest version

If you haven’t updated your GPU drivers in a while, there’s a chance you are seeing the 6066 DEV error code because you are missing a new physics module dependency that Call of Duty Warzone requires. 

This issue is confirmed to occur with both Nvidia and AMD graphic cards.

If you get this error a couple of seconds after you launch the game, it’s likely that your GPU drivers are out of date, and the game can’t run without the required dependencies.

You can address this problem by updating both the GPU drivers and the physics module that controls how the game works.

If you haven’t updated your GPU drivers recently, delete your current GPU drivers and reinstall the most recent ones before trying to run COD Warzone again:

1. Press the Windows key + R to open the Run box.
2. Type “devmgmt.msc” into the run text box and press the Enter key to get to Device Manager.
3. Once you’re in Device Manager, scroll down through the list of installed devices to expand the drop-down menu for Display Adapters.
4. Update the driver by clicking on Update driver after right-clicking on your GPU card.

   Note: If your computer has both a dedicated GPU and an integrated GPU, you need to update the drivers for both.

5. Choose the option “Search automatically for new driver software” from wizard that just appeared.
6. If the scan is done and a new driver version is recommended, follow the instructions on the screen to install it via Device Manager.
7. Restart your computer and launch COD: Warzone again and see if the Dev Error 6066 is now fixed.Note: If Device Manager couldn’t find a new GPU driver version, you’ll need to use the proprietary software that came with your graphics card to update your current graphics drivers. Use one of the following tools depending if you have an NVIDIA or AMD graphics card:
   GeForce Experience – Nvidia
   Adrenalin – AMD

If the same kind of problem is still happening or if your GPU drivers are already up to date, move on to the next method.

6. Revert overclocking (if applicable)

If you are using MSI Afterburner (or similar overclocking software) and have overclocked your GPU, you might get the COD Warzone 6066 DEV error because your system is unstable. 

If you are actively overclocking your GPU,  you might be able to fix the issue by reverting all overclocked frequencies to their original settings.

If you’re using MSI Afterburner, you can get rid of the profiles you’ve previously made.

Note: Before you delete the profiles you’ve made in the MSI Afterburner app, take a screenshot or write down the settings you’ve made in case you need them later.

Follow the steps below to revert any GPU overclocking made inside MSI Afterburner:

1. Open File Explorer and go to the disk where you installed MSI Afterburner. Then go to the Program Files (x86) folder (or wherever you have the app installed).
2. Open the MSI Afterburner folder and go to the Profiles folder.
3. Choose all the files inside the Profiles folder and delete them.
4. Now restart your computer to allow the overclocked values to revert to their defaults and see if the 6066 DEV error is fixed.