The d3dx9_32.dll file is the main .dll file for Direct3D, the legacy DirectX display engine that was not packaged by default with Windows Vista releases. The Direct3D rendering engine for 3D in applications powers programs like games, graphics editing apps and drawing/illustration apps.
The following are a few examples of the typical error messages caused by this missing DLL:

This error means that the d3dx9_32.dll or d3dx932.dll file has been removed or changed and the program you're trying to use can't 'find' it.

This file doesn't come bundled with Windows Vista by default, so it won't be found on one of your backup/restore disks. A quick way to fix file relationship errors like this is by using an automatic repair tool like FileCure.
Installing FileCure, running its 100% accurate file type scan, and fixing the file types that are currently causing errors will only take you 2 minutes. (Download here).
Some users have also been successful at finding a copy of the d3dx9_32.dll file online and saving it into the appropriate folder on their PC (in this case, the C:/windows/system32 folder). Download a copy of the d3dx9_32.dll file here. (Note: the dll file comes in the d3drm.dll package)
IMPORTANT NOTE: Adding the missing or corrupt dll file manually is not officially supported by Microsoft or DirectX and should be performed with caution.
If you choose not to fix this, any applications that access this file simply will stop functioning for you. Error messages of this sort are often only the first indications that your Windows PC needs routine maintenance. When you install/uninstall software on your computer, critical files and registry entries are altered. One by one, these small changes compound and Windows has difficulty making sense of the data. Unfortunately, correctly identifiying and remedying issues with a computer's operating system is a task usually far beyond the average user's skill level. If you are experiencing a “d3dx9_32.dll missing” error, we highly recommend a free file scan of your computer to look for other issues that may also be contributing computer's problems and go from there. If you're encountering hardware issues, you're well advised to consider a driver update program.
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