Fix: Unreal Engine Is Exiting Due to D3D Device Being Lost

Summary :

Solution 1: Disable Antivirus Software

Some antivirus applications might have conflict with Unreal Engine. If you’re using a third-party antivirus app to protect your computer, you should try disabling it temporarily and then check if it works.

Solution 2: Verify Game Files in Steam

Corrupted game files may also lead to D3D device lost problem. To remove the error, you can verify the files by using Steam. Please follow the steps below.

Solution 4: Set Your Graphic Card to Default

If you have installed a dedicated graphics card in your computer for better gaming experience, the game may not be compatible with the dual graphics card due to limited performance of the integrated graphics card, which will lead to D3D device lost error finally.

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