When you’re playing a game, a sudden error message interrupts you. This will make you very annoying.
The “Unreal Engine is exiting due to D3D device being lost” error is a common problem. It isn’t a problem with a particular game. And you’re not the only one bugging by the error.
Don’t worry, they can be fixed.

Try these methods below:

  1. Update your Unreal Engine
  2. Disable your antivirus software
  3. Update your device driver
  4. Verify files in Steam
  5. Disable NVIDIA Geforce Experience Battery Boost
  6. Reduce your PC’s energy consumption
  7. Change your default graphics card
  8. Check your hardware

Method 1: Update your Unreal Engine

Developers of Unreal Engine will continue to release new versions. The new version will fix mistakes which may cause this error. So you should try installing the latest version to see if this fixes the error.
Hopefully, it does. But if not, there are still a few things to try.

Method 2: Disable your antivirus software

It is possible that your antivirus software might have a conflict with Unreal Engine. So try to disable your antivirus and then run the game to check whether the error will appear or not.
If it does fix the error, you may consider changing your antivirus software. Or, you can ask your antivirus manufacturer for advice.

Note: Be extra careful about what sites you visit, what emails you open and what files you download when your antivirus software is disabled.

Method 3: Update your device driver

Updating drivers is a useful method to solve many issues. It’s worth trying when you meet issues. According to users, if the graphics card/video card driver is outdated or corrupted, it may cause this error.

There are two ways to update your driver–manually and automatically.

Manually: To get your device driver, you need to go to its manufacturer website, find the driver corresponding with your specific flavor of Windows version (for example, Windows 32 bit) and download the driver manually.

Once you’ve downloaded the correct driver for your system, double click on the downloaded file and follow the on-screen instructions to install the driver.

Automatically: If you don’t have the time, patience or computer skills to update the driver manually, you can do it automatically with Driver Easy.

Driver Easy will automatically recognize your system and find the correct driver for it. You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing.

You can update your driver automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version it takes just 2 clicks:

  1. Download and install Driver Easy.
  2. Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.
  3. Click the Update button next to the selected driver to automatically download the correct version of that driver, then you can manually install it (you can do this with the FREE version).
    Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system. (This requires the Pro version which comes with full support and a 30-day money back guarantee. You’ll be prompted to upgrade when you click Update All.)

Method 4: Verify files in Steam

If this error occurs when you’re playing games in Steam, you can try verifying files to solve the error.

  1. Run Steam, click Games and select View Games Library.
  2. Right-click on the game that you can’t play because of the error and click Properties.
  3. Under the LOCAL FILES tab, click VERIFY INTEGRITY OF GAME FILES
    Wait until it complete.
  4. Relaunch the game to check whether the error will appear or not.

Method 5: Disable NVIDIA Geforce Experience Battery boost

There’s a situation that you play games smoothly in your charged laptop. But the error occurs when your laptop uncharged. In this case, you can try this method to solve the error.

But this method only supports users with NVIDIA GPU.

  1. Run NVIDIA Geforce Experience. Download from NVIDIA website if you don’t have it.
  2. Click Games and then disable BATTERY BOOST.
  3. Relaunch your game. They should be working fine mostly.

Method 6: Reduce your PC’s energy consumption

In order to improve the gaming experience, people usually adjust their settings to the highest mode. However, this will lead to an overloaded computer with excessive energy consumption which may cause the error.
So, reducing high energy consumption settings may help you solve the error. It includes turning down all the graphics settings to the lowest and underclocking your GPU.

If you’re overclocking the GPU, you can try to underclock it. There are users being able to play a stable game by underclocking their GPU.

Also, turning down all the graphics settings to the lowest can help your game run smoothly.

Method 7: Change your default graphics card

In order to have a better gaming experience, some people may install a dedicated graphics card in their PC. However, due to the limited performance of the integrated graphics card and the game may not be compatible with the dual graphics card, it may cause the “Unreal Engine is exiting due to D3D device being lost” error. In this case, you can set your dedicated graphics card as default graphics card to fix this error.

  1. Run the NVIDIA Control Panel. Click Manage 3D settings.
  2. Under the Global Settings tab, choose High-performance NVIDIA processor in the drop-down list.  
  3. Click Apply.
  4. Restart your PC then run the game to check whether the error will appear or not.

Method 8: Check your hardware

In some cases, problems can be caused by your computer hardware. It’s worth checking the hardware devices on your computer.
For this error, check your video card and graphics card first.
If you discover any hardware issue that you can’t fix yourself, you should contact the manufacturer of your device for support, or simply replace it with a new one.

We hope the above methods can help. If you have any questions or suggestions, feel free to leave comments below.

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