All Microsoft operating systems since Windows 98 can be affected by d3dx9_24.dll and other DirectX issues. This includes Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.
How to Fix D3dx9_24.dll Not Found or Missing Error
Follow these steps in the order listed to tackle the simpler solutions first.
Restart your computer if you haven't already done so.
The d3dx9_24.dll error could be a fluke or a one-time issue, and a simple restart may fix it completely. This is unlikely to fix the issue, but a restart is always a good first troubleshooting step.