The d3dx9_42 DLL file is one of many files in the DirectX software collection. Since DirectX is used by most Windows-based games and advanced graphics programs, these errors usually only appear when using those programs.
D3dx9_42.dll Not Found?✅How to Fix d3dx9_42 Is Missing Error on Your Computer💻Windows 10 32/64bit
Follow these steps in the order they are listed below to try the simpler solutions first.
Restart your computer if you haven't already. The d3dx9_42.dll error could be a fluke, and as with many computer issues, a simple restart may fix the problem entirely.
Install the latest version of Microsoft DirectX. Upgrading to the latest edition is likely to fix the d3dx9_42.dll not found error.
