: If you are playing Ran Online (GS) , check their official Facebook page for a specific D3D9 patch released to address this common issue.
Modern Windows (10/11) includes newer DirectX versions, but older games like Ran Online still require specific libraries. how to fix d3d9 application error ran online
Run the installer to scan for and replace missing or corrupted .dll files like d3d9.dll . : If you are playing Ran Online (GS)