D3dx9_43.Dll Missing or Not Found: How to Fix It

Reinstalling DirectX may be a first call

by Afam Onyimadu
Afam Onyimadu
Afam Onyimadu
Afam is a geek and the go-to among his peers for computer solutions. He has a wealth of experience with Windows operating systems, dating back to his introduction... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • When d3dx9_43.dll is missing, apps that require audio, video, and multimedia may not function properly. 
  • Corrupt files may cause the missing error, and often it may be a sign of virus infection of your device. 
For fixing DLL errors, we recommend Fortect: This tool will replace the damaged or corrupted DLLs with their functional equivalents using its dedicated repository where it has the official versions of the DLL files.
  1. Download and Install Fortect on your PC
  2. Launch the tool and Start scanning to find DLL files that could be causing PC problems
  3. Right-click on Start Repair to replace broken DLLs with working versions
  • Fortect has been downloaded by 0 readers this month.

There are reports of a d3dx9_43.dll not found error often triggered when you need to launch specific programs.

DLL files are essential for many processes on a computer because they include vital code that helps these functions run correctly. This guide enables you to navigate the missing DLL issue with the best solution.

Why is d3dx9_43.dll missing?

The d3dx9_43.dll is a vital component of the DirectX 9 application, a set of multimedia APIs for the Microsoft Windows OS. It may be missing for the following reasons:

  • Corruption – If the file is corrupted, it will cease to function correctly, and applications that depend on it will no longer launch.
  • DirectX 9-related issues – Of these issues, the most common trigger is a bad program installation. This may be because the installation is incomplete or done from a corrupt file.
  • OS compatibility – Users have also noticed compatibility issues with the operating system or hardware may trigger the error.
  • Malware or virus infection – These infections on your device can delete or damage the DLL file, triggering the missing error. That is why a solid antivirus is recommended.

How do I fix the missing d3dx9_43 dll error?

1. Use repair tools

Our top suggestion is to use an effective DLL repair tool. These tools help replace or repair corrupt files.

While there are many to choose from, the tool below remains our top recommendation. The d3dx9_43.dll is bundled with DirectX 9, a Windows native program, and this solution offers a 100% guaranteed fix for all native programs of the OS.

2. Install DirectX

  1. Navigate to the DirectX Windows download center.
  2. Click on the Download button.
  3. Double-click the downloaded setup and follow the installation wizard.
  4. Restart your computer and verify the DLL error is resolved.

3. Manually download the missing file

Navigate to a trusted website to download the missing file. Once you download it, extract it and place it in the same directory as the problematic file.

This solution works, especially if the old DLL is deleted from your computer. However, downloading DLLs may introduce malware into your computer, so you should only get them from trusted websites like DLL Files, where they are scanned for viruses.

4. Run a file scan

  1. Press Windows + R, type CMD, then hit Crtl + Shift + Enter to open an elevated command prompt.
  2. Type the script below and hit Enter.
    sfc /scannow
  3. Wait a while for the scan to complete, then restart your computer.

The SFC is an essential scan on the Windows OS that will detect problems with your files and repair them when possible. Hence, if a corrupt file triggers the d3dx9_43.dll issue, this scan may fix it.

5. Run a virus scan

  1. Press the Start menu, type Windows Security, and click the top result.
  2. Select the Virus & threat protection option.
  3. Click Scan options.
  4. Finally, select Full scan and click the Scan now button.

Using Windows Security is just one way to scan for viruses. So many third-party antimalware tools will detect and protect your device from viruses. However, the scanning steps will differ for each brand.

That is all for this article. You should review the solutions and try the ones you feel are more related to your specific case of the missing DLL.

Let us know in the comments section below what worked for you.

Still experiencing issues?


If the above suggestions have not solved your problem, your computer may experience more severe Windows troubles. We suggest choosing an all-in-one solution like Fortect to fix problems efficiently. After installation, just click the View&Fix button and then press Start Repair.

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