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d3dx9_43.dll missing error is the common Windows problem that can occur when you start your computer, start games or try to use a particular function in a program. If the error occurs, you will receive the following message on your screen:
This program cannot start because d3dx9_43.dll is missing on your computer. Try reinstalling the program to solve the problem.
This application could not be started because d3dx9_43.dll was not found. Reinstalling the application can solve this problem.
Cannot register D3DX9_43.dll
Cannot find D3DX9_43.dll
D3DX9_43.dll Access Violation
D3DX9_43.dll could not be located
Sometimes similar errors can occur, for example d3dx9_42.dll missing or d3dx9_xx.dll missing (xx are the numbers).
The d3dx9_43.dll file is one of the many files contained in Microsoft DirectX. It is often used in Windows games and advanced graphics programs. And the missing error d3dx9_43.dll often occurs when you run these programs, especially video games.
How to fix D3dx9_43.dll bugs
Download and run the DirectX End-User Runtime Web Installer.
Sometimes the error occurs due to an incompatible version of DirectX. The good news is that Microsoft provides DirectX End-User Runtime Web Installer so that users can reset DirectX to 9.0c or earlier.
Visit the official Microsoft website. Then type DirectX End-User Runtime Web Installer in the search box at the top right and press Enter.
Click on DirectX End-User Runtime Web Installer.
Before downloading, you can change the language using the drop-down menu.
Scroll down to click on Download.
Follow the on-screen instructions to complete the installation.
Updating display drivers
Update the display adapter drivers from the Device Manager:
a) Press Windows + R, type devmgmt.msc.
b) Develop the display adapters.
c) Click on Properties, then on the Drivers tab.
d) Click on the Update Driver button.
e) Click on the OK button.
Extract the file manually
If installing or updating DirectX does not solve the problem, your last resort is to manually extract the file and place it in your program folder. This solves the problem for users who cannot let their programs run with another method.
Download the latest version of DirectX.
You can try to download the latest version of Microsoft DirectX to fix the error d3dx9_43.dll not found. Click here to download the latest version of DirectX End-User Runtime Web Installer to your computer. Once the installation is complete, run it and start your program.
Note: The same DirectX installer can be used with all versions of Windows operating systems, including Windows 10, 8.1, 8, 7, Vista, XP, and more. It will replace any missing or corrupted DirectX 11, DirectX 10 or DirectX 9 files.
Uninstall the game or software, then reinstall it. Something may have happened to the program files that work with d3dx9_43.dll, and a reinstallation could do the trick.
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CCNA, Web Developer, PC Troubleshooter
I am a computer enthusiast and a practicing IT Professional. I have years of experience behind me in computer programming, hardware troubleshooting and repair. I specialise in Web Development and Database Design. I also have a CCNA certification for Network Design and Troubleshooting.