Software & Apps Windows How to Fix D3dx9_38.dll Not Found or Missing Errors A troubleshooting guide for D3dx9_38.dll errors by Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated on April 16, 2020 Windows The Ultimate Laptop Buying Guide Tweet Share Email The d3dx9_38.dll file is one of many DLL files contained in the Microsoft DirectX software collection. This means that d3dx9_38.dll issues are caused in one way or another by a problem with DirectX. Since most Windows-based games and advanced graphics programs utilize DirectX, d3dx9_38.dll errors usually show up only when using these programs. Instructions in this article apply to Windows 10, 8, 7, Vista, 2000, and XP. Any of Microsoft's operating systems since Windows 98 may be affected by d3dx9_38.dll and other DirectX issues. D3dx9_38.dll Errors There are several ways that d3dx9_38.dll errors can show up on your computer. Several of the more common specific d3dx9_38.dll error messages are listed below. D3DX9_38.DLL Not FoundFile d3dx9_38.dll not foundThe file d3dx9_38.dll is missingD3dx9_38.dll not found. Reinstalling might help fix this Even though the d3dx9_38.dll error message could apply to any program that utilizes Microsoft DirectX, video games are the general common thread. Whether it is a game or a regular application, d3dx9_38.dll errors can appear at any point that the DLL file is requested, like when starting the game or program or while it's first installing. How to Fix D3dx9_38.dll Errors Do not download the d3dx9_38.dll DLL file individually from any "DLL download site". There are a number of different reasons that downloading DLLs from these sites is never a good idea. If you've already downloaded d3dx9_38.dll, remove it from wherever you put it and continue with these steps. Restart your computer if you haven't yet. The d3dx9_38.dll error might be a fluke and a simple restart could clear it up completely. Install the latest version of Microsoft DirectX. Chances are, upgrading to the latest version of DirectX will fix the d3dx9_38.dll not found error. Microsoft often releases updates to DirectX without updating the version number or letter, so be sure to install the latest release even if your version is technically the same. Assuming the latest DirectX version from Microsoft doesn't fix the d3dx9_38.dll error you're receiving, look for a DirectX installation program on your game or application CD or DVD. Usually, if a game or another program utilizes DirectX, the software developers will include a copy of DirectX on the installation disc. Sometimes, though not often, the DirectX version included on the disc is a better fit for the program than the latest version available online. Uninstall the game or software program and then reinstall it again. Something might have happened to the files in the program that work with d3dx9_38.dll and a reinstall could do the trick. Sometimes, uninstalling a program through its normal uninstaller utility doesn't truly remove every single remnant of the program. These leftover files might still be causing DLL errors, so it's best to make sure they're truly removed before reinstalling the application, which you can do with one of these free uninstaller software tools. Restore the d3dx9_38.dll file from the latest DirectX package. If the above troubleshooting steps haven't worked to solve your d3dx9_38.dll error, try extracting the d3dx9_38.dll file individually from the DirectX package. Update the drivers for your video card. While it's not the most common solution, in some situations updating the drivers for the video card in your computer could correct this DirectX issue. Need More Help? If you don't want to fix this problem yourself, see How Do I Get My Computer Fixed? for a full list of your support options, plus help with everything along the way like figuring out repair costs, getting your files off, choosing a repair service, and a whole lot more.