How to Fix ‘Dev Error 6178’ in COD: Modern Warfare (Easily!)

Call of Duty is one of the most popular shooters of all time. With each successive entry in the franchise, the game has been successful in retaining older players and attracting new players alike. At this point, the game has become an icon among FPS enthusiasts.

The latest entry saw the return and a reboot of the beloved ‘Modern Warfare’ sub-series. Boasting new features and enhancements, Call of Duty: Modern Warfare (2019) promises to be the most ambitious title ever by Activision.

As is the case with every new game releasing these days, Modern Warfare has also seen its fair share of issues. One of these issues is the dreaded ‘Dev Error 6178’. The error reads as follows:

Fatal Error


Several users have reported that the error pops up right before the loading of a map, the camera returning to the player after death, or even randomly at times. This has made the game unplayable for many users and has left the affected player base frustrated.

The developers addressed the issue by rolling out the ‘Update 1.07.1’ patch to fix the error. However, even after the update, many users are still facing issues.

Try these Fixes

To solve the error, we’ll be looking at some of the best fixes on the internet. Please note that the solution for each user may vary. It is recommended you go through each method until the Dev Error 6178 is resolved.

  1. Run Game with Admin Privileges
  2. Update Graphics Drivers
  3. Configure Game Settings
  4. Disable NVIDIA GeForce Experience In-Game Overlay
  5. Increase the Virtual Memory
  6. Disable NVIDIA V-Sync

1) Run Game with Admin Privileges

Fixing the Dev Error 6178 may be just as simple as running the game with administrator privileges. Reportedly, this fix has worked for several users.

To run the game with administrator privileges; Right-click the main game executable and select ‘Run as administrator’.

If you don’t want the hassle of right-clicking every time you run the game, follow these steps:

Step 1: Right-click the main game executable file and select Properties.

Step 2: Under the Compatibility tab, checkmark the Run this program as an administrator option in the Settings section. Click Apply and then OK to save the settings.

Run Modern Warfare as administrator

2) Update Graphics Drivers

Some users have reported that the error can occur due to outdated GPU drivers. Updating the graphics driver to their latest versions have solved the issue for many players.

The problem stems from the fact that Modern Warfare has graphical enhancements that require the latest graphics drivers. To update the GPU drivers, follow these steps:

Step 1: On the desktop, Press Windows+X simultaneously. Select Device Manager from the menu.

Step 2: Under the Display adapters, you’ll find a list of graphics drivers. Depending upon your machine, it can be AMD, Intel, NVIDIA, or a combination of two. Right-click each driver at a time, and select the Update driver option.

Update your graphics card driver

Step 3: A new window will open. Select the Search automatically for drivers option. Follow the on-screen instructions for the installation of the latest GPU drivers.

Step 4: After installation, restart your PC. Check to see if the error persists.

3) Configure Game Settings (Texture Resolution/NVIDIA Highlights)

Many players have pointed out that the two in-game settings, specifically, ‘Texture Resolution’ and ‘NVIDIA Highlights’ are responsible for the error. Analyzing the feedback from various players, the Dev Error 6178 is triggered when the ‘Texture Resolution’ is set to low, and ‘NVIDIA Highlights’ is enabled.

The best fix is to set the texture settings to ‘Normal’ or above and disabling the ‘NVIDIA Highlights’ from the game Settings menu. You can follow the steps below to configure the game settings.

Step 1: Launch the game and go to the Settings menu.

Step 2: Under the Graphics tab, in the Details & Textures section, set the Texture Resolution to ‘Normal’.

Step 3: Scroll down to find the NVIDIA Highlights option. Set it to ‘Disabled’.

4) Disable NVIDIA GeForce Experience In-Game Overlay

The NVIDIA GeForce Experience ‘In-Game Overlay’ option has also been the root cause for many players facing the 6178 error. Disabling this feature has fixed the issue for many. To disable the In-Game Overlay feature, follow these steps:

Step 1: Launch the GeForce Experience application. Click on the General tab on the left side of the program window.

Step 2: Disable the IN-GAME OVERLAY option by toggling off the switch. Save the changes and launch Modern Warfare.

Dev Error 6178 Modern Warfare (Fix 4)

5) Increase the Virtual Memory

As it turns out, Modern Warfare is heavily dependent on virtual memory (Windows Page File) like many other games. Seemingly, the default virtual memory assigned to Modern Warfare can prove to be insufficient. According to several players, assigning more virtual memory helps solve the issue.

Here’s how you can modify the Virtual Memory for Modern Warfare:

Step 1: Press Windows+R to open the Run window. Type in “sysdm.cpl” and click OK.

Step 2: In the System Properties window, go to the Advanced tab. Click on Settings in the Performance section.

Step 3: A new Performance Options window will open. Go to the Advanced tab and click on Change in the Virtual memory section.

Step 4: Uncheck the Automatically manage paging file size for all drives option.

Step 5: Select the drive where you have installed modern warfare. Click on the Custom size option.

Step 6: Add custom values in the Initial size (MB) and Maximum size (MB) fields. Click on Set to save the configuration. Click OK to save all the changes.

Increase the virtual memory for Modern Warfare

Step 7: Restart the PC and launch Modern Warfare.

6) Disable NVIDIA V-Sync

Some players have also reported the error arising from the NVIDIA V-sync setting. Disabling the V-sync has solved the issue for many players. Note that disabling the V-sync will reduce graphical performance. To disable V-sync, follow the steps provided below:

Step 1: Right-click on the desktop and open the NVIDIA Control Panel.

Step 2: In the left pane, under 3D Settings, select the Manage 3D settings option.

Step 3: Click on Program Settings. Click the Add option. Browse to the installation directory of Modern Warfare. Add the Modern Warfare game executable file.

Step 4: Find the Vertical sync setting from the list of features. Click on the setting and select Off from the drop-down menu. Click Apply to save changes.

Disable Nvidia V-Sync

Although it has been quite some time since the game was released, the ‘Dev Error 6178’ remains a problem for the players. Therefore, we hope that this guide helped solve the annoying error and you are enjoying the game. Let us know in the comments down below what worked for you. Your feedback is appreciated.

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