Microsoft Direct X is a collection of Application Programming Interfaces (APIs), which is utilized for handling tasks in the relevance of multimedia, especially game programming and video on MS platforms. The Direct X consists of runtime libraries in redistributable binary form, along with accompanying documentation and headers for use in coding. One of the important DLL file among the Direct X runtime library is d3dx9_42.dll which is a windows hardware abstraction. Most of the games and graphics programs which are based on Windows, require Direct X to run. If something gets wrong with this DLL file, d3dx9_42.dll Errors are thrown while using or trying to open related programs.

In the case of something gets wrong with d3dx9_42.dll file, following error messages will be displayed  on the Windows screen :-

\"File d3dx9_42.dll not found\"
\"D3dx9_42.dll not found. Reinstalling might help fix this\"
\"The file d3dx9_42.dll is missing or corrupt\"
\"The application can not start. D3dx9_42.dll is missing\"

The accounts for being displayed the above error messages, could be improper installation of Direct X , accidental deletion of d3dx9_42.dll file, virus/malware infection, etc. one of the effective reasons for the above errors could be invalid registry entry or any other registry problem. If you are pacing through  such errors on your system then go through the following solutions to get rid of d3dx9_42.dll Errors.
The solutions are :-

• Solution 1.) Download a trusted Anti-virus program and install it to check if computer is suffering from any virus or other infection threats, else the d3dx9_42.dll Errors could not be fixed through by any means.
• Solution 2.) Scan the registry via a trusted registry fix tool to diagnose the d3dx9_42.dll Errors, and click on fix button to repair d3dx9_42.dll error and any other found problems.
• Solution 3.) Check if the Direct X is installed in the system via typing “dxdiag” in the Run command in Start menu. If not found download the latest version of Direct X from a trusted on-line supplier or install it through the CD of your game.
• Solution 4.) If d3dx9_42.dll Errors are thrown while opening a particular program then, reinstalling the software can fix the problem.