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How To Fix Diablo 4 “The Application Has Encountered An Unexpected Error” Issue

Diablo 4 is one of the most anticipated games of the year, with millions of players eagerly waiting to dive into the world of Sanctuary. However, just like any other game, it can run into errors and bugs that can frustrate players. One of the most common issues that players face is the Diablo 4 “The application has encountered an unexpected error” message. If you’re facing this error, don’t worry, as we’ve got you covered with this beginner’s guide on how to fix Diablo 4 “The Application Has Encountered An Unexpected Error”.

What is the Diablo 4 unexpected error?

Diablo 4 unexpected error is an issue that occurs when the game crashes unexpectedly and displays a message that says “The application has encountered an unexpected error.” The error can occur due to various reasons, such as corrupted game files, outdated graphics drivers, or even hardware issues.

Update Your Graphics Drivers

The first step to fixing the Diablo 4 unexpected error is to update your graphics drivers. An outdated driver can cause the game to crash and display the error message. To update your graphics drivers, follow these simple steps:

  • Press the Windows key + X and select Device Manager.
  • Expand the Display Adapters category and right-click on your graphics card.
  • Select Update Driver and follow the on-screen instructions to update the driver.

Verify Game Files

Corrupted game files can also cause the Diablo 4 unexpected error. To fix this issue, you need to verify the game files to make sure that none of the files are corrupted or missing. Here’s how to verify game files in Diablo 4:

  • Open the client and select Diablo 4.
  • Click on the Options dropdown menu and select Scan and Repair.
  • Click on Begin Scan and wait for the process to complete.

Disable Overclocking

If you have overclocked your CPU or GPU, it can cause instability and lead to the Diablo 4 unexpected error. To fix this issue, you need to disable overclocking and run the game at its default settings. Here’s how to disable overclocking in BIOS:

  • Restart your computer and press the F2, F10, or Delete key to enter the BIOS.
  • Look for the Overclocking or CPU Settings option and set it to Disabled.
  • Save the changes and exit the BIOS.

Disable Anti-virus and Firewall

Anti-virus and firewall software can sometimes interfere with the game’s files and cause the Diablo 4 unexpected error. To fix this issue, you need to disable your anti-virus and firewall software temporarily. Here’s how to disable anti-virus and firewall:

  • Press the Windows key + I to open the Settings app.
  • Click on Update & Security and select Windows Security.
  • Click on Firewall & network protection and turn off the Windows Defender Firewall.
  • Open your anti-virus software and disable it temporarily.

Reinstall The Game

If none of the above solutions work, the last resort is to reinstall the game. Uninstall the game completely and then reinstall it. Make sure to install the latest version of the game and update your graphics drivers before playing.

How To Fix Diablo 4 "The Application Has Encountered An Unexpected Error" Issue


The Diablo 4 unexpected error can be frustrating, but with the solutions provided in this beginner’s guide, you should be able to fix it easily. Remember to update your graphics drivers, verify game files, disable overclocking, disable anti-virus and firewall, and reinstall the game if needed. Good luck and happy gaming!

Masab Farooque is a Tech Geek, Writer, and Founder at The Panther Tech. He is also a lead game developer at 10StaticStudios. When he is not writing, he is mostly playing video games