How to Fix DirectX Function Error on Game Launch

What Causes This?

A DirectX function error on launch usually means the game cannot properly talk to your graphics driver or the DirectX components Windows is using. This often happens after a bad GPU driver update, missing or corrupted DirectX runtime files, unstable overclock settings, or game files that are damaged. In some cases, the error is tied to DXGI issues, overlay software, or Windows system files that interfere with rendering.

Common Symptoms

• The game closes immediately after launch with a DirectX, DXGI, or “device removed” error
• You see messages like “DirectX function failed” or “DXGI_ERROR_DEVICE_HUNG”
• The game launches to a black screen and then crashes
• Crashes happen only in one game, or start after a driver update
• Other graphics-heavy apps may freeze or stutter

How to Fix It Manually

1. Restart your PC and close overlay apps

   • Save your work and restart Windows.
   • After rebooting, open Task Manager with Ctrl+Shift+Esc.
   • End background apps that hook into games, especially Discord overlay, MSI Afterburner, RivaTuner, GeForce Experience overlay, or screen recorders.
   • Try launching the game again.

2. Update or reinstall your graphics driver

   • Right-click Start and choose Device Manager.
   • Expand Display adapters, right-click your GPU, and select Update driver.
   • If the error started after a recent update, download the latest stable driver directly from NVIDIA, AMD, or Intel instead of relying on Windows Update.
   • Install it, then restart your PC.
   • If the problem continues, do a clean install from the GPU vendor’s installer to replace broken driver files.

3. Install DirectX and Visual C++ runtime files

   • Press Windows + R, type winver, and confirm you are fully updated in Settings > Windows Update.
   • Then install the game’s required runtime files from its folder:
     • Open the game install directory
     • Look for folders like _CommonRedist, DirectX, or VC_redist
     • Run the DirectX setup and any Visual C++ Redistributable installers inside
   • Restart the PC after installation.

4. Verify the game files

   • In Steam: go to Library, right-click the game, select Properties > Installed Files > Verify integrity of game files.
   • In Epic Games Launcher: open Library, click the three dots under the game, then click Manage > Verify.
   • In EA app or other launchers, use the built-in Repair option.
   • Corrupted shader or rendering files are a common cause of DirectX launch errors.

5. Turn off overclocks and reset graphics settings

   • If you overclock your GPU, CPU, or RAM, return them to default settings.
   • Open your GPU control panel and reset any forced graphics options.
   • If the game has a settings file, delete or rename it so the game creates a fresh one on launch.
   • This helps if the crash is caused by unsupported resolution, ray tracing, or unstable GPU settings.

6. Repair Windows system files

   • Click Start, type cmd, then right-click Command Prompt and choose Run as administrator.
   • Run these commands one at a time:
     1. sfc /scannow
     2. DISM /Online /Cleanup-Image /RestoreHealth
   • Wait for each scan to finish, restart your PC, and test the game again.

7. Force the game to use the correct GPU

   • Open Settings > System > Display > Graphics.
   • Add the game’s .exe file if it is not listed.
   • Click the game, select Options, and choose High performance.
   • This is especially important on laptops with both integrated and dedicated graphics.

Fix It Automatically with Kudu

Kudu can scan for the Windows and driver issues that commonly trigger DirectX function and DXGI launch errors, then apply safe fixes automatically. It also helps clean up broken gaming settings, reduce background interference, and optimize your PC so games launch more reliably.

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