Fatal Error message in Dungeon Defenders 2 [Fixed]

Dungeon Defenders 2 is an Action Tower Defense game developed by Chromatic Games. Some users are getting the Fatal Error message while launching the Dungeon Defenders 2 game. Some of them have experienced the crashing issue with the game after this message appears. If you are getting the Fatal Error message in Dungeon Defenders 2 game, the solutions provided in this post may help you fix it.

Dungeon Defenders 2 Fatal Error

Fix Dungeon Defenders 2 Fatal Error

The following solutions may help you get rid of this Fatal Error message in Dungeon Defenders 2 when playing the game on your Windows 11/10 PC.

  1. Launch the game as an administrator
  2. Verify the integrity of the game files
  3. Turn off your Bluetooth
  4. Disconnect your headset
  5. Disable your antivirus temporarily
  6. Turn off VSync
  7. Roll Back your graphics card driver
  8. Uninstall and reinstall the game

Let’s see all these fixes in detail.

1] Launch the game as an administrator

Some files in a game may require administrative privileges. If the administrative privileges are not granted to those files, the game may display some errors. This might be the case with you. To check this, launch the game as an administrator and see if it helps.

If launching the game as an administrator works, you can make Dungeon Defenders 2 always run as an administrator.

2] Verify the integrity of the game files

This solution is for Steam users. Sometimes, the problem occurs due to corrupted game files. If this is the case with you, verifying the integrity of the game files will fix the problem. The following instructions will help you verify the integrity of your game files.


  1. Open Steam.
  2. Right-click on your game and select Properties.
  3. Select the LOCAL FILES tab.
  4. Now, click on the VERIFY INTEGRITY OF GAME FILES button.

This process will take some time. After the process gets completed, check if the problem persists.

3] Turn off your Bluetooth

Some users have confirmed that the Bluetooth of their Windows 11/10 was causing the problem. The error disappeared when they launched the game after turning off the Bluetooth. You can also try this. The steps to turn off Bluetooth on Windows 11 and Windows 10 are listed below:

turn Bluetooth on off Windows 11

  • On Windows 11, open Settings, then select Bluetooth and devices from the left side. Turn off the button next to Bluetooth.
  • On Windows 10, open Settings, then go to “Devices > Bluetooth & other devices.” Turn off the Bluetooth button.

4] Disconnect your headset

According to some affected gamers, the issue was occurring due to hardware conflict. They found their headset causing the Fatal Error in Dungeon Defenders 2 game. After disconnecting the headset from their Windows device, the error was gone. If you have connected your headset (either USB or wireless), disconnect it first, then launch the game. See if it helps.

5] Disable your antivirus temporarily

Sometimes, antivirus software generates false-positive flags and blocks genuine applications or games from working properly. We suggest you disable your antivirus temporarily and see if this fixes the problem. For some users, temporarily disabling the antivirus did not work. But when they uninstalled their antivirus, the issue was fixed. If the issue persists even after disabling the antivirus, you can try uninstalling it. But before you uninstall your antivirus, make sure that you have its product activation key. If you have purchased the antivirus online, the key was sent to you in your email. You will not be able to activate your antivirus after reinstalling it if you do not have its product activation key.

If disabling the antivirus works, you can add the executable file of Dungeon Defenders 2 as an exception to your antivirus. Refer to the user manual of your third-party antivirus or visit its official website to know how to do that.

Read: How to clear Origin cache on Windows 11/10.

6] Turn off VSync

VSync or Virtual Sync is a technology that eliminates the tearing issue in video games. Sometimes, VSync causes problems in video games. If you have turned on this feature, the error might be occurring due to this. To check this, disable VSync and then launch the game.

7] Roll Back your graphics card driver

Roll Back graphics card driver

  1. Press the Win + X keys and select the Device Manager.
  2. In the Device Manager, expand the Display adapters node by double-clicking on it. You will see your graphics card driver there.
  3. Right-click on the graphics card driver and select Properties.
  4. Now, click on the Driver tab and see if the Roll Back Driver option is available. If yes, click on it and follow the on-screen instructions.

The above action will restore the previous version of your graphics card driver. When the rolling back process gets completed, launch the game and see if the error appears this time.

8] Uninstall and reinstall the game

If none of the above fixes helped you, uninstall and reinstall the game.

Read: Teardown keeps crashing or freezing on Windows PC.

How can I fix Dungeon Defenders 2 Connection Timed Out error?

If you are getting the Connection Timed Out error in Dungeon Defenders 2, first, check your internet connection. An unstable internet connection causes several errors in games. Sometimes, connection issues occur due to the game server issues. Hence, wait for some time and launch the game later.

You can try some fixes like changing your server in your game settings, connecting your computer to your router via an ethernet cable, etc.

Dungeon Defenders 2 stuck on the loading screen

If Dungeon Defenders 2 sticks on the loading screen, open the Task Manager and kill the game. After that, wait for a few minutes and relaunch the game. Sometimes, the problem occurs due to an unstable internet connection. Hence, check your internet connection. If your internet connection is stable and working fine, restart your modem and see if it fixes the problem.

Hope this helps.

Read next: Diablo Immortal keeps crashing and is not launching or working on PC.

Dungeon Defenders 2 Fatal Error

Source link


MORRIS is an impassioned technology writer. He always inspires technologists with his innovative thinking and practical approach. A go-to personality for every Technical problem, no doubt, the chief problem-solver!

Leave a Reply