Windows 10 and Windows 11 come with DirectX 12 – a completely different API. For backward compatibility, Microsoft includes a DirectX 9.0c core runtime , but (from 2004). The “extra” files like d3dx9_41.dll , d3dx9_42.dll , d3dx9_43.dll , and XAudio2_7.dll were never added to the operating system.
Get-ChildItem C:\Windows\SysWOW64\d3dx9_*.dll | Select-Object Name, VersionInfo Directx 9.0c Extra Files -x86 X64-
It is built for both x86 (32-bit) and x64 (64-bit) architectures. Windows 10 and Windows 11 come with DirectX
Thus, even the most modern GPU needs d3dx9_43.dll for a game that calls it. Without those DLLs, the game crashes instantly – regardless of your GPU power. Directx 9.0c Extra Files -x86 X64-