All Microsoft operating systems since Windows 98 can be affected by d3dx9_28.dll and other DirectX issues. This includes Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.
Fix the error D3dx9_28.dll not found or missing
Follow these steps in the order they are listed below to try the simpler solutions first.
Restart your computer if you haven't already done so.
The d3dx9_28.dll error may be a fluke and a simple reboot may fix it completely. It is unlikely that this will fix the problem, but a reboot is always a good first step.
