Solved: The UE4 Game Has Crashed Fatal Error

If you have encountered the UE4-Game has crashed and will close Fatal Error pop-up message while trying to launch the game, this guide can help.

Why does my UE4 project keep crashing? It could be failing to start due to missing files, outdated game, corrupted graphics drivers, or your computer is not compatible with DX12.

How can I fix the UE4 game has crashed fatal error?

Before moving to the troubleshooting steps to fix the game crashing issue, make sure you go through these preliminary checks:

• Ensure Windows and BIOS are updated to the latest version, check if the PC meets the minimum system requirements, and then restart your PC in clean boot.
• Disable overlays and overclocking if enabled, then reinstall the Microsoft Visual C++ Redistributable.

1. Delete the DBFighterZ folder

1. Press Windows + R to open the Run dialog box.
2. Type %localappdata% and click OK to open the Local folder in the AppData Directory.
3. Locate the DBFighterZ folder and select it, then press the Delete icon.
4. Restart the game to check if the issue persists.

2. Modify a registry entry

1. Press Windows + R to open the Run dialog box.
2. Type regedit and click OK to open the Registry Editor.
3. First, create a backup of the registry entries. For that, go to File, then select Export. Save the .reg file in the accessible location.
4. Navigate to this path: Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
5. Select the GraphicsDrivers folder, right-click the empty space, then select New, followed by DWORD(32-bit) and name it TdrDdiDelay.
6. Double-click TdrDdiDelay, set the Value data to 30 and select Base as Decimal.
7. Click OK to confirm.
8. Next, add another DWORD, name it TdrLevel. 
9. Double-click it and set the Value data to 3, then choose Base as Decimal and click OK.
10. Reboot your computer and run the game to check if the issue persists.

3. Edit the hosts file

1. Press the Windows key, type cmd in the search box and click Run as administrator.
2. Copy & paste the following command and press Enter: notepad %windir%\system32\drivers\etc\hosts
3. Once the hosts file is open, add this line at the end of the document – 0.0.0.0 datarouter.ol.epicgames.com datarouter-weighted.ol.epicgames.com
4. Press Ctrl + S to save the file, close Notepad and close the CMD window as well. Now, try running the game.

4. Update/reinstall the graphics driver

1. Press Windows + R to open the Run window.
2. Type devmgmt.msc and click OK to open the Device Manager app.
3. Locate and click Display adapters to expand the category.
4. Right-click the graphics driver and choose Update driver.
5. Select Search automatically for drivers.
6. Follow the on-screen instructions to complete the process, then reboot your computer.

If there is no update available or updating the driver doesn’t help, follow these steps to reinstall the driver:

1. Open Device Manager again, and click Display adapters to expand.
2. Right-click the graphics driver and choose Uninstall device from the context menu.
3. Click Uninstall to confirm the action.
4. Go to Action, then select Scan for hardware changes to reinstall the driver.
5. Reboot your PC.

Updating the graphics driver can also help you fix the Dx11 feature level 10.0 is required to run the engine; read this guide to learn about other solutions.

5. Verify the integrity of the game files

1. Press the Windows key, type steam in the search box, and click Run as administrator.
2. Go to Library, right-click the game, and select Properties.
3. Click the Installed files option, and click the Verify integrity of game files. The process will take several minutes as Steam verifies the game files and replaces the corrupted or missing ones in the process.

Verifying the integrity of game files can also help you fix the LowLevelFatalError issue; read this guide to learn more about it.

6. Run the game in DirectX11 mode

1. Press the Windows key, type steam in the search box and click Run as administrator.
2. Go to Library, right-click the game, and select Properties.
3. Choose General from the left pane and locate Launch Options.
4. In the empty field, type -dx11.
5. Close the Properties window, then choose Play in DX11 Compatibility Mode.
6. Now, click Play and check if the issue persists.

Once you have fixed the error, don’t forget to restart your computer in normal mode by reverse engineering the steps of performing a clean boot.

In conclusion, to avoid the UE-4 game crashing Fatal error, you need to make sure your computer meets the minimum system requirements and has Windows & BIOS updated.

In case you have encountered the issue, you need to delete the DBFighterZ file from the AppData folder, update or reinstall the graphics driver, verify the integrity of game files, edit the Hosts file, or add a registry entry.

In case you are facing other game issues, like Unreal Engine 4 won’t launch on Windows and Mac, we have tackled it in a different guide.

Did we miss a step that helped you? Feel free to mention it in the comments section below. We will happily add it to the list.