Here is a secret that veteran modders use: Instead of forcing GTA San Andreas to use old DirectX 9.0 components, you can "wrap" the game to convert its commands into DirectX 11, 12, or even Vulkan. This solves 100% of compatibility errors and improves performance.
Microsoft still hosts the official DirectX 9.0c End-User Runtime. Here is how to get it: gta san andreas directx 9.0 download
A: The Definitive Edition runs on Unreal Engine 4, which uses DirectX 11/12. You do not need DirectX 9.0 for that version. This guide only applies to the classic 2004 PC release. Here is a secret that veteran modders use:
This method installs every legacy DLL your copy of GTA San Andreas could ever ask for, including d3dx9_27.dll through d3dx9_43.dll . including d3dx9_27.dll through d3dx9_43.dll .