While trying to run the Game you see the following, pop-up window:

Other variations of this message are:

• d3dx9_31.dll not found
• File d3dx9_31.dll not found
• The file d3dx9_31.dll is missing
• d3dx9_31.dll is missing. Replace d3dx9_31.dll and try again.
• Missing component d3dx9_31.dll
• This application has failed to start because d3dx9_31.dll could not be found.

All d3dx9_31.dll issues are caused in one way or another by a single issue – a problem with Microsoft DirectX®.

The d3dx9_31.dll file is one of many files contained in the DirectX software collection. Since DirectX is utilized by most Windows® based games and other advanced graphics programs, d3dx9_31.dll errors usually show up only when using these programs.

Important Note: Do NOT under any circumstances download the d3dx9_31.dll file individually from any “DLL download site”. If you have done so already, remove it from wherever it was placed.

This problem is best resolved by updating DirectX® from Microsoft’s Download Center.

During the update of DirectX, the window below will pop-up on your screen. Once all the components are installed the Game should now run without any further problems.