Learn to Fix d3d9.dll Not Found or Missing Error Easily on Windows


By Jack Lin

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It is frustrating to encounter the same errors while working on a computer. Similar to other DLL files, the d3d9.dll in the Windows system file, is associated with DirectX.

DirectX is considered an important file in the computer. It is used in an advanced graphics program and enhances the gaming experience on the Windows system.

If the DirectX software is outdated, you may encounter a ‘d3d9.dll not found on Windows’ error message. For instance, if you are trying to run any program or a game that is related to DirectX 9 version but currently you have DirectX 8 version on your system, you will face a d3d9.dll error.

d3d9.dll error

There are many other error messages that you may encounter other than ‘d3d9.dll not found on Windows’. The error message depends upon its cause.

We have mentioned some common error messages that will help you to understand them better. 

  • D3d9.dll was not found.
  • D3d9.dll Access Violation.
  • The d3d9.dll file is missing.
  • Cannot register the file d3d9.dll.
  • D3d9.dll not found. Reinstalling might help fix this.
  • Cannot find C:\Windows\System32\d3d9.dll.
  • This application failed to start because the d3d9.dll file was not found. Re-installing the application may fix this problem.
  • Cannot start Windows 8 Consumer Preview ISO images. A required component is missing: d3d9.dll. Please install Windows 8 Consumer Preview ISO images again.

Now that we have discussed different d3d9.dll missing error messages let’s dive into the methods to solve this problem. Read on to learn the methods to fix the d3d9 error.

Method 1: Reinstall the DirectX Program to Fix the d3d9.dll Not Found Issue

This method is easy and effective in removing d3d9.dll errors from your computer system. You just need to uninstall the old version of DirectX and re-install a new version of it.

Before installing the new version, be sure to check the installed version in your computer system. The following guide will help you to check the installed DirectX version on your PC.  

1: Go to the ‘Start‘ menu and search for ‘Command Prompt‘ or press Windows + R keys on your keyboard to open the ‘Run‘ window. Type cmd in the dialog box and press Ctrl + Shift + Enter to open Command Prompt as administrator. 

2: Now input dxdiag and press ‘Enter‘ in order to open the DirectX Diagnostic Tool window

3: In this window, you would check which version of DirectX is installed in your computer system. 

If you are using an old version of this program, you need to download and install a new version of it from its official website. After installing the new version, reboot your computer system to take effect.

Now check whether the d3d9.dll error persists or not. If it still occurs, head on to another method.

Method 2: Replace the Problematicd3d9.dll file from Your System Manually

In case you still face the d3d9.dll error on your Windows, you need to manually remove the d3d9.dll file from another computer system. Make sure that the computer you choose should have a similar operating system as your problematic computer.

If you don’t know the process, the below guide will help you to do so.

1: Go to the ‘Start‘ menu and type ‘cmd‘ in the search box. Click on the first match and open the ‘Command Prompt‘ window.

Command Prompt

2: In the Command Prompt as administrator, input control /name Microsoft.system and hit the ‘Enter‘ key.

control /name Microsoft.system

3: Now, follow the above two steps from the system you want to copy the d3d9.dll file

4: After that, press the Windows and E keys together on your keyboard and click on ‘File Explorer.’ Then navigate to the below-given paths:

  • C:\Windows\System32


  • C:\Windows\SysWOW64
Replace d3d9.dll to fix error

5: Copy the d3d9.dll file from your working computer and save that file to the external hard drive or USB flash drive.

6: Lastly, paste the d3d9.dll file to the same location on your problematic system from where you copied that file. 

After copying and pasting the file, restart your computer system to take effect. Run the problematic program again and check whether the d3d9 error persists.

Method 3: Update Device Driver to Fix d3d9.dll Not Found Issue

In case the above two methods do not solve your problem, then there might be a problem with your system’s device driver. Sometimes an outdated sound or video driver also causes a d3d9.dll error. To fix the error, you need to update those drivers immediately.

Following is the simple guide that will help you to install a new version of the driver.

1: Go to the ‘Start‘ menu and input ‘Device Manager‘ in the search box to open its window, or you can simply press the Windows and X keys together on the keyboard and select ‘Device Manager.’

2:  Tap on the ‘Display Adapter‘ option to dilate the category.

3: Right-click the device driver and choose ‘Update Driver.’

4: In the new window, select the option ‘Search automatically for updated driver software‘.

Update Driver to fix d3d9.dll error

5: Now, wait patiently until the new version device driver installs in your computer system.

After installing the new version of a device driver, restart your PC to take effect. Try running the problematic program and check whether the d3d9.dll error persists. 

Alternative Method: You can easily update the video driver with the help of ‘Driver Easy.’ This software is easy to access, and it updates the driver with just one scan.

Method 4: Uninstall and Reinstall the Games and Programs

Many users have positively responded to this method of fixing the d3d9 error. You need to uninstall the current game or program that is showing an error and then download the software from their official website and reinstall them. 

It’s up to you whether you manually uninstall and reinstall the application or automatic. However, remember that manual installation does not always fully remove the files of the software from your computer. Some files might remain on your computer. Its registry entry and leftover file junks might persist in your system. 

Therefore, when you again install these files or programs, these leftover junk creates a problem. That is why it is recommended to use a third-party software uninstaller to uninstall the programs or applications.

PS: let’s figure out how to fix the comdlg32.ocx missing error.

Method 5: Run System File Checker to Fix d3d9.dll Not Found Issue

The d3d9.dll error is also caused due to a corrupted or missing system file. However, it is not a big problem and can be fixed easily by using a system file checker on your system. System file checker is a tool that helps you to scan the defaulted or corrupted system files on your PC.

If you think that there is a problem in your system files, you can run this tool and fix the problem. In case you’re unaware of its process, read on to know about it.

1: Go to the Windows ‘Start‘ menu and type in ‘Command Prompt‘ to open Command Prompt as an administrator window. 

2: In the ‘Command Prompt‘ window, input the following command and hit ‘Enter.’

  • scf /scannow
sfc /scannow

This command delivers the message to scan the computer system and detect the problem. After detecting the problem, it automatically fixes that problem. Now, please restart your computer system and check whether you still encounter the d3d9.dll error.

Besides, if you are experiencing the gdiplus.dll error on Windows 10, here are the top solutions for you.

Method 6: Scan Your System for Malware

If none of the above solutions help you, try scanning for viruses, bugs, or malware in your computer system. Sometimes, unwanted files or folders creates problem in the computer and prevents your computer from running any program or game. The viruses destroy the DLL files and cause d3d9.dll errors. 

You can scan your system files either with the help of a third-party tool or Windows Defender Firewall.

Read below to know how to scan system files with the help of the Windows Defender Firewall. 

1: Press Windows + I keys on the keyboard. 

2:  In the ‘Setting‘ application, click Update & Security.

Update & Security Settings

3: Now, search for ‘Windows Defender‘ and click on it.

4: Select ‘Windows Defender Offline scan‘ located under the ‘Defender Settings.’        

5:  Tap on the ‘Scan Now‘ button.

Windows Defender Offline scan

Now Defender Firewall will scan your system and detect the defaulted files (if any) on your computer system. After that, it will automatically remove those files and restart your computer system. 

Third-party Antivirus Tool

Although you can use the Defender Firewall tool to remove viruses from the system, this method does not always work. This is why people use advanced antivirus tools. There are many options in the antivirus tool, and you can choose any one of them. However, we will recommend you to use SpyHunter.

SpyHunter is the reliable and advanced antimalware software that helps you to remove complicated malware from the computer system. It is easy to access and completely safe from threats. You can visit their official website and download it.

Method 7:  Try System Restore

If none of the above solutions works for you, then you are only left with system restoration. You can perform this operation and restore your system before this error occurs. Restoring the system might be a tough and risky task, but if you follow the steps wisely, you can avoid mistakes.

1: Press Windows and R keys together and input rstrui in the dialog box. Now press the ‘Enter‘button.

2: In the ‘System Restore‘ window, search for ‘Choose a different restore point‘ and click on it.

System Restore to fix d3d9.dll error

3: Then click the ‘Next‘ button.

4: Choose the ‘Show more restore points‘ checkbox.

Show more restore points

5: After that, choose the date to which you want to restore the system.

6: Click the ‘Next‘ and then the ‘Finish‘ button.

Now, just restart your PC system and check whether the d3d9.dll error persists.


  1. Can I download a d3d9.dll file from the internet? It’s generally not recommended due to security risks. Always update or reinstall the affected software.
  2. Can outdated drivers cause other errors? Yes, outdated drivers can cause various system errors.
  3. Can I use any antivirus software? You should use reliable and reputable antivirus software to ensure comprehensive protection.
  4. How often should I update my drivers? Regularly check for driver updates to keep your system running smoothly.
  5. Can a hard shutdown damage other files? Yes, a hard shutdown can potentially corrupt system files, leading to errors.


These are the seven different methods that will help you to fix the d3d9.dll error. Remember that each method depends upon the cause of the error. Therefore, try using the one which helps you to remove this error from your PC. 


10 years of experience in information and computer technology. Passionate about electronic devices, smartphones, computers, and modern technology.