This MiniTool Software Ltd. post offers seven solutions for fixing the Civilization V (Civ V) runtime DX11 error that prevents the game from loading. Let's explore these fixes:

The Problem: The error message "Runtime Error! ... DX11.exe This application has requested the Runtime to terminate it in an unusual way. Please contact the application’s support team for more information." indicates a problem preventing Civ V from launching.

Solution 1: Enable All Civ V Game Mods

If you previously used mods, loading a saved game without them can trigger this error. Ensure all previously used mods are enabled, either directly in the game or through the Mod Menu.

Solution 2: Launch Steam in Offline Mode

Sometimes, network connectivity issues cause problems. Try these steps:

1. Access Steam's settings (Steam > Settings > Account).
2. Uncheck "Don't save account credentials on this computer".
3. Go offline (Steam > Go Offline > Restart in Offline Mode).
4. Launch Civ V. If successful, go back online and relaunch the game.

Solution 3: Delete Corrupted Cloud Files

Corrupted cloud saves can also be the culprit. Follow these steps:

1. Disable Steam Cloud sync (Steam > Settings > Cloud > Uncheck "Enable Steam Cloud synchronization").
2. Go offline in Steam.
3. Navigate to your Steam userdata folder (typically C:\\Program Files (x86)\\Steam\\userdata). Find the 8930 folder (your Civ V folder) and delete its contents.
4. Launch Civ V, play, and save.
5. Exit Civ V, delete the vdf file in the 8930 folder.
6. Go online in Steam, re-enable Steam Cloud sync, and launch Civ V. A cloud sync conflict may appear; choose "Upload to the Steam Cloud".

Solution 4: Reinstall Graphics Card Drivers

Navigate to your Civ V installation folder (C:\\Program Files(x86)\\Steam\\Steamapps\\common\\sid meier’s civilization v) and reinstall the .exe files in the VCRedist and DirectX folders, along with D3D11Install.exe (for Windows Vista or 7).

Solution 5: Rename the Save Folder

Corrupted save files can cause issues. Back up your save folder, rename the original folder, and relaunch Civ V. If the problem persists, restore the backup. Consider deleting the save and cache folders as a last resort.

Solution 6: Temporarily Disable Firewall/Antivirus

Your security software might be blocking Civ V or Steam. Temporarily disable them, then relaunch the game. For a permanent fix, add Steam and Civ V to your security software's whitelist.

Additional Troubleshooting Steps:

• Verify Civ V's game files integrity.
• Restart your computer and Steam.
• Update Steam and your graphics drivers.
• Reinstall Civ V or Steam.
• Perform a clean boot.
• Reinstall your operating system (last resort).
• Run Steam as administrator.
• Lower graphics settings.
• Disable Crossfire/SLI.
• Run without mods.
• Disable Steam Community In-Game.
• Change screen mode (fullscreen/windowed).
• Avoid building many cities.

Note: Multiple solutions may need to be combined to resolve the issue. The cause varies depending on individual setups.

Recommended Software: MiniTool ShadowMaker is recommended for backing up your data before and after major system changes like upgrading to Windows 11.

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