Payday 3 has finally launched after a decade of Payday 2. However, the game is experiencing server issues at launch and players are unable to play the game. Aside from that, PC users are also experiencing errors and issues with the game like the Win64 shipping error or LowLevelFatalError. In this Payday 3 guide, I will list fixes that will help PC players fix the LowLevelFatalError.

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Payday 3 LowLevelFatalError Fixes You Can Try

According to Payday 3 PC players, they are experiencing the Win64 shipping error with the following error message.

LowLevelFatalError [File:Unknown] [Line: 31] Pak chunk signature check failed!

PAYDAY3Client_Win64_Shipping
PAYDAY3Client_Win64_Shipping
PAYDAY3Client_Win64_Shipping
PAYDAY3Client_Win64_Shipping
PAYDAY3Client_Win64_Shipping
PAYDAY3Client_Win64_Shipping
PAYDAY3Client_Win64_Shipping
kernel32
ntdll

There are multiple reasons why PC users are experiencing the Win64 shipping error or LowLevelFatalError like the game or Windows account not having administrative rights, corrupt or damaged system files, Intel CPU e-cores, and more. The following are the fixes that will help Payday 3 players fix the LowLevelFatalError.

Run The Game As An Administrator

Giving Payday 3 administrative rights is one of the LowLevelFatalError fixes that will work for you. For Steam users, right-click Payday 3 in Steam library > Manage > Browse local files. A new Explorer window will open with the game files. Right-click the executable > properties > Compatibility mode > check “Run this game as an administrator” and apply the changes. Play Payday 3 and it won’t crash with LowLevelFatalError.

Click on Browse local files to open a new window with the game files
Right-click the executable and select properties
Go to the Compatibility tab and check “Run this program as an administrator”

If you are playing the game on Gamepass, right-click Payday 3 > Manage > Files > Browse. A new explorer window will open with the game files. Go to Payday 3 > Content and locate the executable which is usually in the Binaries folder. Right-click the executable > properties > Compatibility mode > check “Run this game as an administrator” and apply the changes.

Run The Game In Compatibility Mode

Another fix for the Win64 shipping error or LowLevelFatalError is to run Payday 3 in compatibility mode. Right-click Payday 3 in Steam library > Manage > Browse local files. A new Explorer window will open with the game files. Right-click the executable > properties > Compatibility tab > check “Run this program in compatibility mode” and select either Windows 7 or 8. Launch Payday 3 and the LowLevelFatalError is now fixed.

Run SFC Scan

Corrupt or damaged system files is another cause for the Payday 3 Win64 shipping error or LowLevelFatalError. It can be fixed by running the SFC scan using the command prompt. The scan will find and replace any damaged or corrupt files and will fix the Payday 3 LowLevelFatalError. Open CMD and run it as administrator, type sfc /scannow, and press enter. Let the scan complete, and if it finds any corrupt system files, it’ll automatically download and replace it. Launch Payday 3 and the Win64 shipping error is fixed.

Run CMD as an administrator.
type the SFC Scan command and press enter.

Uninstall DLC

Your pre-order or special edition bonuses are another reason why Payday 3 is crashing with LowLevelFatalError. Uninstall these DLC items and the error will be fixed.

  • Open your Steam library
  • Select Payday 3
  • Click on “Manage My DLC” under DLC to the right
  • Uncheck all the DLC and close the window.
  • Play Payday 3 and it won’t crash with the LowLevelFatalError
Click the highlighted option.
Uncheck all DLC.

Disable CPU e-cores

If you are using a CPU that has e-cores and p-cores, the e-cores are probably the ones causing Payday 3 to crash with the LowLevelFatalError. You’ll have to disable e-cores through the BIOS and the error will be fixed. To Get to the BIOS:

  • Open Windows Settings
  • Go to Windows Update > Advanced Options > Recovery
  • Click “Restart Now” in front of Advanced startup
  • Your PC will restart and Windows will give you options when it boots.
  • Go to Troubleshoot > Advanced Options > UEFI Firmware settings
  • Click on Restart
  • Once the BIOS opens up, go to the Power, Performance, and Cooling tab
  • Click on Performance Settings
  • Scroll down and find the click Processor option and open it
  • Set Active Efficient Cores to 0 to disable e-cores
  • Save changes and exit
  • PC will restart, play Payday 3 and you won’t face the LowLevelFatalError again

That is all for our Payday 3 fixes for the Win64 shipping error or LowLevelFatalError. If you are facing errors and issues with other PC games or your PC, then also see our hub for commonly occurring PC errors and their fixes.

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David is a highly skilled technical writer with 5+ years of experience in providing fixes for video games and tech bugs. He is an expert in troubleshooting and has helped countless gamers overcome frustrating technical issues. In addition to providing bug fixes, David also specializes in writing technical reviews for video games. His expertise in the industry allows him to provide insightful commentary on gameplay mechanics, graphics, and other technical aspects that are crucial to a game's success.