How to Fix Dev Error 6068, 6065, 6165 and 6066 in COD Warzone?

Call of Duty: Warzone is the latest addition to the Call of Duty game series. It’s an online battle royale game that is part of the 2019 Call of Duty: Modern Warfare game. Infinity Ward and Activision have made it possible for fans of the battle royale genre to compete with popular games like Fortnite and PUBG. However, many PC players have reported encountering Dev Error 6068, 6065, 6165, and 6066 while playing COD Warzone.

The new Warzone mode has come with plenty of bugs and errors that become unbearable each day. Now, if you’re also one of them, check this troubleshooting guide completely. As more and more players are entering into the game and trying to play it for hours, most of the PC players are getting some of the dev errors that include either DirectX error or multiplayer-related issues.

Gamers on PC may experience severe issues related to graphics or memory. If you’re facing any of these issues, know that you’re not alone. Infinity Ward has recently released a patch update, but it may not solve the problem for everyone. Fortunately, we have some possible workarounds listed below that you should try.

There are many users in Reddit complaining about this issue, here are few comments that users started complaining

MW: Warzone error 6068 from r/pcmasterrace

Fix Dev Error 6068, 6065, 6165 and 6066 in COD Warzone

A user also replied that this error could be fixed:

Same issue with a 5700xt the other day. Found this on a reddit thread: In Battle.net go to Options and tick on Additional Command Line Arguments and type in -d3d11 and it worked for me. No crashes and played 5-6 hours yesterday with no issues. Hope it helps

another user:

Dev error codes 6068, 6065, 6165 and etc… we need a developer response. from r/CODWarzone

Fix Dev Error 6068 in Warzone

For users with this error can try the below solution to see if it can fix:

DEV ERROR 6068 crashes frequently from r/CODWarzone

Follow these steps to fix Dev Error 6068 in COD WarZone:

1. Disable Overlay Apps

Deactivate the NVIDIA overlay from GeForce Experience and all other overlay applications like Steam Overlay, Xbox Game Bar, Discord Overlay, etc. To do so:

• Right-click on the Taskbar and select the Task Manager.
• Click on the Startup tab > Scroll down and locate the Nvidia GeForce Experience process.
• Click on it to select it and click on Disable.
• Finally, make sure to restart your computer to change the effects.

Next, you can open the Steam launcher and click on Steam from the top-left corner > Select Settings > Click on In-Game from the left pane > Turn Off ‘Enable the Steam Overlay while in-game’ > Click on OK to save changes.

Similarly, you can turn off the Xbox Game Bar from Windows Settings > Gaming. Whereas, open the Discord application and turn off the overlay as well.

2. Set Display Mode to Borderless

Sometimes it can possible that your display mode in the Modern Warfare or Warzone game doesn’t support fullscreen borderless. So, you should use the windowed borderless mode. Check this in-depth guide to do this.

3. Update Windows

If in case, you haven’t updated your Windows operating system for a while, make sure that you have the latest version of Windows OS build. It not only updates the DirectX and Visual C++ redistributables but also improves several compatibility issues and fixes bugs. To do this:

• Press Windows + I keys to open Windows Settings.
• Now, click on Update & Security > From the Windows Update section, click on Check for Updates.
• If the update is available, make sure to click on Download and Install.
• Once done, reboot your computer to apply changes.

4. Set Priority of Modern Warfare

You should open Task Manager and set the COD Modern Warfare to High Priority. To do this:

• Press Ctrl + Shift + Esc keys to open Task Manager.
• Now, go to the Details tab > Scroll down and locate the COD Modern Warfare.
• Then right-click on the task and hover over the Set Priority.
• Select High from the drop-down list and save changes.
• Once done, close Task Manager, and run the game again to check whether the issue has been fixed or not.

5. Lower the in-game Textures Quality

We’ll recommend you to set the in-game texture quality to low or normal mode if your PC configuration isn’t powerful enough. There are several details and textures settings as well which we’ve mentioned below.

• You can go to the in-game Settings menu > Head over to the Details & Textures section.
• Here you can set the Particle Quality to Low.
• Set Texture resolution to Low.
• Set Texture Filter Anisotropic to Normal.
• Disable – Tessellation.
• Select On-demand Texture Streaming to Disabled.
• Ensure to choose Streaming Quality to Low.

6. Set the Game at 30 FPS

If your PC configuration isn’t powerful enough to handle games at 60FPS consistently then you can lock the game at 30 frames per second. Follow the following steps to do the same:

• Open the Nvidia Control Panel.
• Click on Manage 3D settings.
• Open ‘Program Settings’, now select the Warzone game from the list.
• Now, change the vertical sync setting to ‘Adaptive Half Refresh Rate.’
• Launch the COD Warzone game.
• Next, you also need to disable vertical sync in the game; doing this will lock the game to 30 frames per second (FPS).

If none of the above steps worked for you, try the following method properly.

7. Clean Install Nvidia Display Driver

The chances are high that somehow your Nvidia Display Driver doesn’t run well. So, it would be best if you properly uninstalled it and then reinstall it again.

• Download Display Driver Uninstaller on your PC.
• Download Nvidia Driver according to your graphics card.
• Install and run the Display Driver Uninstaller > Select “Clean and restart.”
• Once done, install the downloaded Nvidia Driver on the PC.
• Start playing the game.

Additional Workarounds:

It seems that Dev Error 6068 can happen due to the corrupted DirectX file on your Windows system. Additionally, an outdated Windows OS build or an outdated graphics driver can also cause this particular error code.

The Dev Error 6068 appears with an error message something like “DirectX encountered an unrecoverable error.” To fix this issue, follow the below steps properly until the error code is fixed.

#1 Try Running Other Games

It may also possible that the PC hardware or software has some serious issues. So, it’s better to try running other online games on your computer to check whether any errors are appearing or not.

#2 Check your RAM Frequency

It looks like the COD Warzone game basically requires around 3000MHz RAM frequency to run it properly or smoothly. So, make sure that your PC configuration is meeting the system requirements of the game. If not, that can be another reason behind such an error.

#3 Change Video Memory Scale

You’ll need to change the Video Memory Scale on your PC. To do so:

• Close the COD Modern Warfare game > Open File Explorer.
• Navigate to the Documents\Call of Duty Modern Warfare\players path. [If you’ve installed your game to another drive, navigate there]
• Look for the adv_options.ini file and edit in Notepad.
• Now, find out the VideoMemoryScale line > Change the value of VideoMemoryScale to 0.5.
• Save the changes and try running the game again to check for the issue.

#4 Use a Stable Internet Connection

Make sure to check whether your internet connection is stable or not. Your internet connection should work fine. However, if the results aren’t satisfactory, then you can also try changing the wireless (Wi-Fi) connection to a wired (Ethernet) connection or vice versa.

Make sure to try increasing the internet speed by upgrading to a higher data plan or fiber connection.

#5 Close Unnecessary Background Tasks

Most importantly, try force closing all the unnecessary or higher CPU/Memory usage background running processes like browser, startup programs, overlay applications, any cloud service, etc.

• Press Ctrl + Shift + Esc keys to open Task Manager.
• Click on the Processes tab > Click to select the task that you want to close.
• Now, click on End Task to close it.
• Do the same steps for every task that you want to close.

#6 Use PC Screen Only Option

If in case, you’re using multiple screens that are connected to your computer, make sure to use the single PC screen only.

• Make sure to exit the Call of Duty Modern Warfare game.
• Go to Task Manager and close all the COD processes which are running in 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.

#7 Run the Game as an Administrator

Sometimes it can possible that your game files don’t have admin access to run it properly on your Windows system. Try to run the game as an administrator first. To do this:

• Launch the Battle.net client > Open Call of Duty Modern Warfare.
• Click on Options > Select Show in Explorer.
• The Modern Warfare installed folder will open.
• Find and right-click on the executable file and select Run as administrator.
• If prompted by UAC (User Account Control), click on Yes to allow the permission.

#8 Verify and Repair Game Files

Well, if your game files are somehow missing or corrupted then make sure to verify and repair the game files properly by using the Battle.net client.

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

#9 Use Additional Command Line Arguments

A corrupted DirectX installation can also cause issues with the game. Reinstall DirectX directly from the Microsoft official site. Additionally, you can use the command line argument field to forcefully use DirectX 11 for your games.

• Open Battle.net client > Click on Modern Warfare.
• Select Options > Choose Game Settings.
• Click on the Additional Command Line Arguments checkbox to enable it.
• Now, type -d3d11 in the input field and save changes to forcefully use DirectX 11.
• Finally, restart your Battle.net client and run the Warzone game again.

#11 Reinstall Shader Files

• Try reinstalling the Shaders file during the Warzone gameplay. Don’t exit the game. Make sure to fully reinstall Shaders during the gameplay. Once done, restart your Battle.net client and check for the issue.
• Try to delete the Players/Players 2 folder from Documents\Call of Duty Modern Warfare\ location on your PC. Make sure not to permanently delete the file. Simply select the file and press Delete only to move it to Recycle Bin (If anything goes wrong, you can get back your file). Once done, launch the game.

#12 Turn Off V-Sync and G-Sync

Manage Vertical Sync (V-SYNC) from NVidia Control Panel. Ensure to fully exit the game and launcher.

• Open Nvidia Control Panel > Select Manage 3D settings.
• Change Vertical Sync to Adaptive Half Refresh Rate.
• Make sure to save changes and re-launch the game.
• You can also Disable G-SYNC from the Nvidia Control Panel.

#13 Disable Crossplay

Although the crossplay feature is very useful for online multiplayer games, you can temporarily disable the Crossplay option from the Modern Warfare game Settings to cross-check the issue.

• Open Battle.net client > Click on COD: MW from the Game Library list.
• Go to Options > Navigate to the Account tab.
• Select Crossplay > Turn it off.
• Finally, try running the game again.

#14 Use Default Clock Speed

Install MSI Afterburner tool or Zotac firestorm app to set CPU/GPU overclocking to its factory default state. In search of having the power-packed performance in gaming, it can cause several issues with the CPU or GPU if the overclocking doesn’t go well with the configuration or gaming requirements.

#15 Run System File Checker

Sometimes a program on your Windows system can also cause stuttering or lagging or even crashing the game unexpectedly. If that’s the case, try running the system file checker (SFC) to check whether there is any bad sector or error present in the hard drive or not. To do so:

• Click on the Start menu > Type CMD.
• Now, right-click on the Command Prompt > Select Run as administrator.
• If prompted by UAC, click on Yes > Type the following command and hit Enter to execute:

sfc /scannow

• You may have to wait for some time to complete the scanning process.
• If there is any visible error available, try to fix it.

#16 Reinstall Modern Warfare/Warzone

If none of the methods worked for you, try reinstalling the game again on your computer. To do that:

• Launch the Battle.net (Blizzard) client > Head over to the Game Library.
• Click on the Call of Duty: Modern Warfare.
• Click on Options > Select Uninstall Game.
• Finally, restart your computer.
• Now, open the Battle.net client again and download/install the COD Modern Warfare again.

This should definitely fix the Dev Error 6068 in COD Warzone.

Fix Dev Error 6065

Even after a year or so, plenty of players are experiencing this particular error code. It seems that lowering the in-game graphic settings can avoid such issues. Alternatively, the Dev Error 6065 can occur due to the outdated Windows OS version, system drivers, corrupted game files, etc.

1. Run Battle.net as an Administrator

First, you’ll need to restart your computer and then launch a game or Battle.net launcher as an administrator. (Most important)

• Right-click on the Battle.net client > Select Properties.
• Click on the Compatibility tab > Enable the Run this program as an administrator checkbox.
• Click on Apply and then OK to save changes.
• Now, you can run the Battle.net client and Warzone game again.

2. Check Windows and Graphics Driver Update

• Click on the Start menu > Go to Settings.
• Click on Update & Security > Select Check for updates from the Windows Update option.
• If the update is available, click on Download and Install.

To check the graphics driver update, you can directly visit your GPU card manufacturer’s official website then download and install the latest version for Nvidia GPU or AMD GPU.

Additionally, you can manually check for driver update by following the steps below:

• Press Windows + X keys to open the Quick Access Menu.
• Now, select Device Manager > Double-click on Display adapters to expand it.

• Right-click on the active or dedicated graphics card > Select Update driver.
• Choose Search automatically for drivers > If there is an update available, it’ll automatically download and install the update.
• So, let the process to complete. Once done, restart your system.

3. Reinstall DirectX

DirectX is one of the most important parts of the Windows operating system that helps to run apps or games smoothly. We’re highly recommending you update your Windows system build to its latest version periodically.

Once done, you can try reinstalling the DirectX version via the DirectX Installer from the official Microsoft website.

4. Whitelist from Windows Defender Firewall

Ensure whitelisting the Battle.net launcher and Modern Warfare game file to the third-party Antivirus program or Windows Defender protection to run the game properly.

• Open Windows Defender from the Start Menu.
• Click on Virus & threat protection > Open Virus & threat protection settings.
• Scroll down a bit and choose ‘Add or remove exclusions’ under ‘Exclusions.’
• Click on ‘Add an exclusion’ > Select the file or folder you want to exclude.
• Finally, confirm the task > Restart your computer.

Now, you can run the game via the Battle.net launcher to check whether it has been fixed Dev Error 6065 in COD Warzone.

5. Try Lowering the GPU Clock Speed

If nothing seems to work for you, try lowering the GPU clock speed to the factory default speed using the MSI Afterburner tool or Zotac firestorm app. In most cases, users may want to use ultra-high performance of the CPU and GPU, which may end up with several bottleneck issues.

6. Clear Background Tasks

If in case, multiple tasks are running in the background that you don’t want to continue then make sure to clear the background runnings tasks easily.

• Open Task Manager by pressing Ctrl + Shift + Esc keys.
• Go to the Processes section > Check which processes are taking up more memory or CPU usage.
• Eliminate them one by one by selecting the process and clicking on End Task.
• Once all done, make sure to restart your computer to refresh the system.

7. Disable V-Sync and G-Sync

• Disable in-game V-Sync and turn on the Vertical Sync from Nvidia Control Panel.
• It would also help if you disabled the G-Sync from the Nvidia Control Panel. To do so:
  • Close the Modern Warfare game > Launch Nvidia Control Panel.
  • Click on Display > Click on Set up G-Sync.
  • Uncheck the checkbox called ‘Enable G-Sync’.
  • Click on Apply and relaunch the game client to run the Call of Duty MW.

8. Disable Full-Screen Optimizations

You should try disabling the full-screen optimizations on your game by following the steps below.

• Right-click on the Modern Warfare exe (executable) file > Head over to Properties.
• Click on the Compatibility tab > Enable the ‘Disable fullscreen optimizations’ checkbox.
• Select Apply and then OK to save changes.
• Now, you should run the game to check for the issue.

9. Scan and Repair Game Files

• Open the Battle.net client > Go to Game Library.
• Now, click on COD Modern Warfare.
• Click on Options > Select Scan and Repair.
• Click on Begin Scan > Wait until the scanning to complete.
• Once done, it will automatically fix the issue.
• Finally, reboot your game launcher and try running the game again.

Fix Dev Error 6165

The Dev Error 6165 appears whenever players try loading multiple screens for the multiplayer mode or try opening the cut scene for the single-player mode. If you’re also encountering this particular error code then make sure to check for the latest GPU drivers. Mostly, this specific workaround can easily fix the problem.

Additionally, ensure to check for the latest graphics driver update because it may happen that any update is pending. Make sure to install the update and check whether the Warzone Dev Error 6165 has been fixed or not.

1. Roll Back GPU Driver

It’s worth mentioning that downgrading the GPU driver version can easily resolve multiple issues whatsoever. To do so:

• Right-click on the Start menu > Then click on Device Manager.
• Double-click on the Display adapters to expand the list.
• Right-click on the card/driver name label.
• Click on Properties.
• Under the Driver section, click on the Roll Back Driver option.
• Wait for the process to complete and you’re done.

2. Adjust Monitor Resolution Settings

Additionally, try to adjust the monitor settings from 2K resolution to 1080P resolution instead. Go to your Monitor Settings and then select Full-HD resolution for optimal gaming performance.

3. Reinstall Modern Warfare/Warzone

Otherwise, you can try uninstalling and reinstalling the game again. To do this:

• Launch the Battle.net (Blizzard) client > Head to the Game Library.
• Click on the Call of Duty: Modern Warfare.
• Click on Uninstall Game from the Options category.
• Once the game is removed, restart your computer.
• Now, open the Battle.net client and download/install the COD Modern Warfare.

Fix Dev Error 6066

The COD Dev Errors 6065 and 6066 can happen due to GPU problems. Infinity Ward has suggested some of the possible workarounds that are mentioned below:

1. Run VRAM at Maximum

Here are the steps to find out the VRAM available.

• Press the Windows + I keys to open Windows Settings.
• Click on System > Under the Display section, click on Advanced display settings.
• From the bottom of the page, click on Display adapter properties for Display 1.
• A new pop-up window will appear > You should check Total Available Graphics Memory.

2. Increase Virtual RAM

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

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

3. Force the Game to Start with DirectX 11

• Open Battle.Net Client on the PC.
• Open the game COD Modern Warfare > Go to Options.
• Check Additional Command Line Arguments and type -d3d11 command line.
• 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.

4. Restore GPU Defaults

Whether you’re using Nvidia or MSI or AMD GPU card, you should restore the clock speed to its default via the MSI Afterburner tool or Zotac firestorm application. Using the default clock speed will ensure 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.

• Launch the Nvidia GeForce Experience app.
• 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, some other overlay apps can also 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, then make sure to temporarily turn them off and try running the game again to check for the issue.

7. Update Windows OS Build

• Click on Start > Choose Settings > Select Update & Security.
• Click on Check for updates. If any update is available, simply Download and Install it.
• Once done, the system will ask you to restart your computer to apply changes.

8. Set Higher Priority

If the issue persists, try to set the Higher CPU Priority for the Call of Duty Modern Warfare game from the Task Manager.

• Press Ctrl + Shift + Esc keys to open Task Manager.
• Now, go to the Details tab > Scroll down and locate the COD Modern Warfare.
• Then right-click on the task and hover over the Set Priority.
• Select High from the drop-down list and save changes.
• Once done, close Task Manager, and run the game again to check whether the issue has been fixed or not.

9. Use PC Screen Only Option

If in case, you’re using multiple screens that are connected to your computer, make sure to use the single PC screen only.

• Make sure to exit the Call of Duty Modern Warfare game.
• Go to Task Manager and close all the COD processes which are running in 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 has a single setting for its ray tracing support. Go to 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 most important parts for the Windows operating system to run apps or games smoothly, we’ll highly recommend you to update your Windows to its latest version & build. Once done, you can 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 by using the Battle.net client.

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

13. Disable Crossplay

Disable “Crossplay” in the game settings; you can find this option by navigating to the Options menu and then opening the Account tab. This will ensure 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 even crashing issues with the Modern Warfare/Warzone gameplay or while launching, make sure to use the MSI Afterburner tool or Zotac firestorm to underclock or set the default clock speed. Now, you can try again to run the game whether it’s working or not.

15. Check Internet Connection

Sometimes poor internet connection causes dev errors. Check and refresh your internet connection. This seems small, but it may become the main reason for errors.

• Open the in-game Settings menu > Go to Options.
• Click on the General tab > Head over to the Telemetry section.
• Select Server Latency and turn it on.

16. Reinstall COD Modern Warfare

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

• Launch the Battle.net (Blizzard) client > Head over to the Game Library.
• Click on the Call of Duty: Modern Warfare.
• Click on Uninstall Game from the Options category.
• Once the game is removed, restart your computer.
• Now, open the Battle.net client and download/install the COD Modern Warfare.

I hope this guide is helpful in fixing the COD Warzone dev errors 6068, 6065, 6165, and 6066.