Microsoft DirectX End-User Runtime (official), your GPU manufacturer’s website, or GitHub (for wrappers).

Do not look for standalone "Shader Model 3.0" installer files. Shaders are bundled directly inside the system's graphics libraries. Missing framework elements like d3dx9_31.dll prevent the engine from communicating with your hardware's shader pipeline.

Tip for Nvidia users: If the latest drivers don't work, sometimes using DDU (Display Driver Uninstaller) to cleanly remove drivers and installing a slightly older version (a few months back) can resolve detection issues with older games.

Navigate to the official open-source distribution on the DXVK GitHub Releases archive.

: Upgraded display drivers sometimes drop instructions required by older Direct3D frameworks. Step-by-Step Fixes 1. Download and Deploy the DirectX End-User Runtimes

: Grand Theft Auto IV relies on explicit components of Microsoft DirectX 9.0c. Modern installations of Windows 10 and Windows 11 only come pre-packaged with core DirectX 11 and 12 files.