This file is a part of Microsoft Direct fo Windows. Was developed by MicrosoftCorporation.
This is a system file, or, possibly, hidden. It is usually located in %System% folder and its size is 1 Kb.
DLL refers to the dynamic Libraries. Everytime when the program is open on your computer, the program loads the appropriate process in your RAM memory. d3dx9_42.dll errors happen usually when two programs use the same .dll file. When one program is deleted, it sometimes deletes the file, which actually refers to both programs. In addition, such errors may occur when the file is corrupt, deleted by Antivirus or just has an incorrect version.
What options do you have to get rid of "d3dx9_42.dll is missing" issue.
In the majority of cases, the solution of d3dx9_42.dll is missing issue is to correctly reinstall particular software that is using this file on your PC, to the Windows system folder, or to the game or application installation folder.
But in case you do not have the installation distributive of application or just do not know, what program is using this file – you should probably download this missing or damaged file and put it in the right folder.
The most common errors related to d3dx9_42.dll:
d3dx9_42.dll was not found
Can not register d3dx9_42.dll
d3dx9_42.dll Access Violation
d3dx9_42.dll file not found
Component failure d3dx9_42.dll
Can not find C: Windows System32 d3dx9_42.dll
Can not find C: Windows SysWOW64 d3dx9_42.dll
How to install the file
Find out what software is causing the d3dx9_42.dll problem.
Place the file in the same folder that contains the program.