The file d3dcompiler_43.dll is one of many files in the DirectX software collection. Since DirectX is used by most Windows-based games and advanced graphics programs, errors related to this file will usually only appear when using these programs.
How to Fix D3DCompiler_43.dll Missing Error Windows 10 GTA 5
Follow these steps in the order I've listed them below to try the simpler solutions first.
Restart your computer if you haven't already. The d3dcompiler_43.dll error may be a fluke, and since restarting is a common solution to many computer problems, it may completely fix this DLL error.
Install the latest version of Microsoft DirectX. Upgrading to the latest version will likely fix the "d3dcompiler_43.dll not found" error, but if it doesn't, try DirectX End-User Runtimes (June 2010).
