Fix: ‘D3dx9_39.dll is Missing’ Error in Windows 11/10

If this file is missing or can’t be found, an app or game that needs it might not work right. Fix D3dx9_39.dll is Missing Error can be fixed by reinstalling DirectX, downloading and installing the missing DLL file by hand, or updating the graphics drivers on the system.

Users can fix the problem by running a system file checker scan or a clean boot. This guide has 7 steps that should help you fix Windows if d3dx9_39.dll is not found. But if you want to skip the long manual process, you can try a maintenance tool like Restoro, which can fix missing DLLs, different system errors, Blue Screens of Death (BSODs), and corrupted files. If not, use the step-by-step directions below.

5 Solved: ‘D3dx9_39.dll is Missing’ Error in Windows 11/10

Reinstall the problematic program

1. First, press Windows + R together to open the RUN dialog box.
2. Type “Control” into the RUN box, and then press OK.
3. Now, in the Control panel window, choose View by as Category and then Uninstall a program.
4. Find the program that is giving you trouble and right-click on it. Then click the option to Uninstall/Change.
5. Then, just follow the steps on the screen to finish uninstalling.
6. Once you’ve removed the program, you’ll need to download and install it again.
7. Finally, start the program again and see if the problem is still there.

Update/Reinstall the Graphics Driver

1. Windows and drivers up to date, especially graphics card drivers.
2. Check if d3dx9_39.dll file is missing or fixed.
3. Open web browser and go to OEM website to download latest graphics driver.
4. Right-click on Window icon on desktop’s taskbar, select Device Manager.
5. In Device Manager, expand Display adapters, right-click on graphics driver, choose Uninstall Device.
6. Confirm message and complete uninstallation process. Check “Delete the Driver Software for This Device” option.
7. Restart computer and check if d3dx9_39.dll file error is resolved.

Refresh DirectX Runtime Installation

1. Go to the official download page for the DirectX Runtime June 2010 redistributable package on Microsoft’s website.
2. Run the installer and then follow the instructions on the screen to finish the process.
3. Restart your computer after installing the DirectX Runtime June 2010 redistributable package.
4. Open the app that was causing trouble.
5. Check if the error still occurs.’

Check for Any New Windows Updates

1. Recommended: Check for any Windows updates available since initial download and installation of DirectX.
2. These updates might include bug repairs and performance improvements.
3. Assist in resolving DirectX errors.
4. If unsure how to update Windows, refer to manual instructions for updating Windows.
5. Complete the installation process.
6. Attempt to launch the application again.
7. Check if the error still appears.
8. If yes, proceed to the next step.

Update Your Graphics Drivers

1. Graphics drivers play a crucial role in the functioning of your computer’s graphics system.
2. If your graphics drivers are outdated, you may encounter the d3dx9_43.dll is missing error.
3. To resolve this issue, you need to update your graphics drivers.
4. There are two ways to update your graphics drivers: manually or by using a graphics card manager.
5. Manually updating your graphics drivers involves finding and downloading the latest drivers from the manufacturer’s website and installing them on your computer.
6. Alternatively, you can use a graphics card manager to automate the driver update process.
7. If you’re unsure how to update your graphics card on Windows, you can refer to a guide or tutorial for assistance.

What is d3dx9_39.dll?

The Microsoft DirectX software collection includes many DLL files, including the d3dx9_39.dll file. Each DLL (Dynamic Link Library) has a specific set of instructions that other programs can use to borrow a certain feature. Because of this DLL system, a single file’s programming can be used by multiple programs at the same time.

The DirectX Runtime June 2010 redistributable package includes the d3dx9_39.dll file. This update is actually optional, but a lot of apps and games use it. But the newest versions of Windows won’t come with DirectX Runtime June 2010 by default, and the needed DirectX package won’t be installed through WU (Windows Update).