If you are an avid gamer or work normally on projects that require advanced graphics programs, then you must have encountered a d3dx9_43.dll missing error sooner or later. This is a very common error that occurs due to a problem with Microsoft DirectX. It is one of the many files in the DirectX library.
One of those common errors that can appear on your Windows PC is "The program cannot start because d3dx9_43.dll is missing from your computer. Try reinstalling the program to fix this problem". Fortunately, this can be easily fixed, let's see how.
Solution: Install the latest version of DirectX
Step 1: To go Google and search Microsoft Download Center. Click on the first result.
Step 2: A Microsoft Download Center home page, go to the search bar and search DirectX End User Web Runtime Installer. Click on the first result.
Step 3: Then click on the red download and wait for the download to finish.
4 phase: Click on the downloaded file setup.exe and once the installer opens, click the radio button next to "I accept the agreement“And click The next.
Step 5: Then follow the instructions on each page to complete the installation.
Click on To finish at the end of the installation. Now that DirectX is installed, restart your computer and you shouldn't see the error again.