Have you ever received the Unreal Engine 4 Crash report with the error code 'Pak Chunk signature check failed!'?

Below, you'll be able to find some potential solutions for resolving this issue!

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Solution 1: Verifying your game files

Firstly, you will need to verify your game files on Steam and make sure they are fully up to date!

To do this:

  1. Right-click on the game in your Steam Library
  2. Choose Properties
     
  3. Select the Local Files tab
     
  4. Press Verify integrity of game files...
     

Then attempt to run the game to see if the issue is resolved.

Solution 2: Deleting the Paks folder

If that hasn't worked to solve your Pak Chunk error, then please navigate to the following directory:

  • C:\Program Files (x86)\Steam\steamapps\common\Hell Let Loose\HLL\Content

     and delete the Paks folder.

Then attempt to verify your files again following the steps provided above.

Solution 3: Change your sound settings

Another solution for 'pak chunk errors' you can try is to change the following sound setting:

  1. Right-click the volume icon in the bottom-right corner of your desktop
     
  2. Select Sounds
     
  3. Go to the Recordings tab
  4. Double-click on the default input device
     
  5. Go to the Advanced Settings tab and uncheck Exclusivity Mode
     
  6. Apply the changes and retest the game

If that doesn't work as well, then we would recommend running a memory test check.

You can find out more about how to do this by clicking right here, though it would be best if you could use MemTest86.

Simple Solutions:

  • It is important to make sure that you're not using any overclocking software - if you have this kind of software installed, then please disable it and retest the game.
  • If the problem continues when the software is closed or not installed, please go into the game settings and change the video option from windowed to full-screen.