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7 Ways to Fix Nightingale DirectX 12 Error

In this guide, you’ll learn how to resolve the Nightingale error “DirectX 12 is not supported on your system. Try running without the -dx12 or -d3d12 command line argument.”

How to Fix Nightingale DirectX 12 Error

Here are the best solutions to fix Nightingale DirectX 12 error.

1. Run the game as an administrator. To ensure smooth operation, run the game application on your PC with administrator access. This grants necessary permissions, particularly User Account Control (UAC), for seamless execution.

Simply follow the steps below to grant admin access once, eliminating repetitive prompts. Here’s how:

  • Navigate to the Nightingale game directory.
  • Right-click on the game’s application file.
  • Select Properties > Compatibility tab.
  • Check Run this program as an administrator.
  • Click Apply and then OK
  • Double-click the game’s application file to launch it.

2. Force Use DirectX 11. To run Nightingale with DirectX 11, follow these steps.

  • Open Steam and go to the Library.
  • Right-click on High On Life and select Properties.
  • Navigate to General > Launch Options.
  • Type –Dx11 in the field.
  • Reboot Steam and launch the game.

If the error persists, try this alternative method.

  • Go to Steam > Library > Manage.
  • Select Browse local files and create a desktop shortcut for Nightingale.
  • Right-click the shortcut and go to Properties.
  • In the Target line, add dx11 at the end.
  • Click OK to apply changes and launch the game to check for the issue.

3. Best fixes as reported by users. The same error occurred for other games as well, but the fix remains the same. Here are the fixes used by them while playing the game.

byu/MoronDark from discussion

4. Update Nightingale. To ensure smooth gameplay, manually check for game updates.

  • Open Steam and go to the Library.
  • Select Nightingale.
  • If an update is available, click Update.
  • Wait for the update to complete.
  • Reboot your PC to apply changes and prevent potential issues.

5. Verify and repair the game files. Corrupted or missing game files installed on your PC can lead to various issues during game launch or while playing. Fortunately, you can quickly verify and repair these files using the game launcher.

  • Open Steam and go to your Library.
  • Right-click on Nightingale from your list of installed games.
  • Select Properties and go to Local Files.
  • Click on Verify Integrity of Game Files.
  • Wait for the process to complete.
  • Restart your computer once the verification is finished.

6. Disable Windows Firewall. It appears you’re using the default Windows Firewall for security. However, sometimes it can block online connections to servers. To fix this.

  • Open the Start Menu and search for Windows Defender Firewall.
  • Click Turn Windows Defender Firewall on or off.
  • Select Turn off Windows Defender Firewall (not recommended) for all domains.
  • Click OK, then reboot your PC to apply changes.

7. Disable Windows Defender. To temporarily disable Windows Defender antivirus and prevent any issues with game file blocking.

  • Press Win+I to open Settings.
  • Navigate to Update & Security > Windows Security.
  • Click on Virus & Threat Protection, then Manage Settings.
  • Toggle off Real-time protection.
  • If prompted, click Yes to confirm.

Note: If you use another antivirus program, disable it from its settings.

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