Let me guess - you’re trying to open a game and instead you receive a D3dx9_29.dll missing error, right? If that is the case, or this error pops up with other applications then in the following post I’ll show how to fix it. Actually, fixing it’s quite easy, simply follow the repair guide provided below.
This dll belongs to your DirectX installation and you can usually find it in the C:\WINDOWS\system32 folder. Many, if not most 3D Windows based games as well as other multimedia programs, use the great benefits of the DirectX technology in order to enhance the user’s experience especially when it comes to audio and display.
Most complaints are from PC gamers (Battlefield is just one example) who simply can’t run any game. When trying to run a game, it won’t open and instead Windows usually pops up error messages indicating that the dll is missing. Another complaint is that the screen display becomes messy when trying to run a game.
What causes this error?
There are two issues – one is a problem with the dll file and the second is a problem with one or more of your display and or audio related drivers.
How to repair it
(1) Replace invalid display and audio related drivers
This by itself can resolve the D3dx9_29.dll missing error - using an incompatible or corrupt display or audio related drivers may not only trigger this error, but even crash Windows. You simply need to detect and replace those invalid drivers.
An easy way to detect and replace invalid drivers:
(1) Download the following drivers diagnostic tool
(2) Let it conduct an in-depth drivers diagnostics
(3) By the end of the scan open the Drivers report
(4) See if it reports of any invalid display/audio related drivers
(5) If they’re invalid replace them immediately!
(6) Restart Windows
It is recommended to replace any other invalid drivers as well in order to avoid other problems in the future.
(2) Update your DirectX installation
Visit the following URL from Microsoft’s official site – download and install the latest DirectX installation. When finished, restart Windows.
By following these steps you should no longer encounter this D3dx9_29.dll missing error.