The d3d9.dll module is associated with DirectX version 9. D3d9.dll is an essential file and is required to run games and other multimedia programs that use the DirectX technology. Removal of this file may prevent certain programs from running on your system.
D3d9.dll errors
Error 1
You may receive the following error when you run a Windows game:
“The procedure entry point ddentry10 could not be located in the dynamic link library ddraw.dllâ€
Cause of the Error
The above problem generally occurs when DirectX is not installed or when the d3d9d.dll file is not registered on your computer.
Resolution Steps
To fix the above error you first need to ensure that DirectX is installed on your computer. If DirectX is already installed, register the d3d9.dll file by performing the following steps:
- Click on the Start menu and select Run.
- In the Open box, type cmd and click OK to open the Command Prompt window.
- Next, type regsvr32 d3d9.dll and press Enter.
Error 2
You may encounter the following error when you run a Windows game:
- “Access violation error in DirectX file D3D8.DLLâ€
- “dplay.dll has performed an illegal operationâ€
Cause of the Errors
These d3d9.dll errors occur due to a compatibility issue between the game and the version of DirectX installed on the system. Certain games are specifically written for DirectX9 and do not run with older versions, like DirectX8 or DirectX7. An error like the one shown above gets generated when you run games that require DirectX9 on a system that has previous versions of DirectX installed.
How to check the DirectX version
To check the DirectX version installed on your system, perform the following steps:
- Click Start and then Run.
- Type dxdiag in the Open box and click OK.
- Click the General tab in the DirectX Diagnostic Tool window. Check the DirectX version under System Information.
Resolution
To fix this d3d9.dll problem, upgrade to DirectX9. You can download DirectX9 from the Microsoft Website.
Error 3
The following errors may appear when you run a game, install a new application, or during system shutdown and startup:
- “The application failed to start, the file d3d9.dll was not found. Reinstall the application to fix the error.â€
- “The d3d9.dll file is missing.â€
Cause of the Errors
Generally, the above d3d9.dll errors are caused when either of the following conditions hold true:
- The d3d9.dll file is missing.
- The d3d9.dll file is corrupt.
Depending on the cause of the d3d9.dll missing or not found errors, you can perform either of the following steps to fix the d3d9.dll error on your system:
Reinstall any recently uninstalled program
If the d3d9.dll error has started occurring after you uninstalled a program, chances are high that incorrect installation might have caused removal of the d3d9.dll file. To fix the d3d9.dll problem, reinstall the uninstalled program. Next time when you uninstall any program, to ensure correct and complete removal of the program, use either the Add or Remove Programs utility or reliable third-party uninstaller software, such as Perfect Uninstaller.
Download the missing d3d9.dll from the Internet
If incorrect uninstallation does not seems to be reason for the missing DLL, download d3d9.dll from a trustworthy and reliable online DLL directory.
Run a virus/malware scan of your entire System
If search results show that the d3d9.dll file is present on your system, a malware may have infected the DLL file, causing recurring d3d9.dll problems. Perform a malware scan of your entire system using advanced antimalware tools, such as STOPzilla Antivirus and Spyware Cease to ensure the copy of d3d9.dll on your system is not corrupt.
Perform a registry scan
If the above steps fail to eradicate the d3d9.dll error, scan your registry for errors, using efficient registry cleaning software, such as RegServe. Often, a corrupt registry is found to be the root cause of common system errors. RegServe is an advanced tool that allows you to perform custom registry scans to identify and eliminate DLL errors.