How to Fix D3dx9_31.dll Is Missing or Not Found Errors GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Software & Apps > Windows
How to Fix D3dx9_31.dll Not Found or Missing Errors
A troubleshooting guide for d3dx9_31.dll errors
By Tim Fisher Tim Fisher Senior Vice President & Group General Manager, Tech & Sustainability Emporia State University Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire. lifewire's editorial guidelines Updated on December 30, 2021 Tweet Share Email Tweet Share Email Windows The Ultimate Laptop Buying Guide All d3dx9_31.dll issues are caused in one way or another by a single issue: a problem with Microsoft DirectX. The d3dx9_31.dll file is one of many files contained in the DirectX software collection. Since DirectX is utilized by most Windows-based games and other advanced graphics programs, these errors usually show up only when using these programs. Any of Microsoft's operating systems since Windows 98 may be affected by d3dx9_31.dll and other DirectX issues. This includes Windows 11, Windows 10, Windows 8, Windows 7, etc. D3dx9_31 dll Errors
There are a number of different errors involving d3dx9_31.dll, any one of which may show up on your computer. These are just some of the more common DLL error messages you might run into: D3DX9_31.DLL Not FoundD3dx9_31.dll not found. Reinstalling might help fix thisFile d3dx9_31.dll not foundThe file d3dx9_31.dll is missingD3DX9_31.DLL is missing. Replace D3DX9_31.DLL and try againMissing component d3dx9_31.dllThis application has failed to start because d3dx9_31.dll could not be found It's important to understand the context during which the error occurs in order to properly fix it. For example, you don't want to troubleshoot a missing DLL error for a video game if your error is related to a graphics editing program. The d3dx9_31.dll error message could apply to any program that utilizes Microsoft DirectX, but it's most commonly video games, and it typically appears when the game is started. In non-game applications, this error might appear when the program starts or before graphics features of the program are used. Some common games and other programs that have been known to generate d3dx9_31.dll errors include Tom Clancy's Rainbow Six, Battlestations: Midway, Vanguard: Saga of Heroes, Supreme Commander, Star Wolves 2, NeonDS (a Nintendo DS emulator), Autodesk Inventor Professional, Hospital Tycoon, Spider-Man 3, Halo 2, Transformers, and more. How to Fix D3dx9_31 dll Errors
Do not, under any circumstances, download this DLL file individually from any DLL download site. There are a number of reasons why doing that is never a good idea. If you've already done so, remove it from wherever you put it and continue with the following steps. Restart your computer if you haven't already. This error might be a one-time issue, and a simple restart could clear it up completely. It's unlikely this will fix the problem, but restarting is always a good first step with nearly any problem. Install the latest version of Microsoft DirectX. Chances are, upgrading to the latest version will fix the d3dx9_31.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. The same DirectX installation program works with all versions of Windows including Windows 11, 10, 8, etc., and will replace any missing DirectX file. Assuming the latest DirectX version from Microsoft doesn't fix the 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 it on the installation disc. Sometimes, though not often, the 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_31.dll, and a reinstallation could do the trick. Restore the file from the latest DirectX package. If the above steps haven't worked to resolve your error, try extracting the d3dx9_31.dll file individually from the DirectX software 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're not interested in fixing 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 lot more. Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit More from Lifewire How to Fix D3dx9_41.dll Is Missing or Not Found Errors Fix D3dx11_43.dll Missing or Not Found Errors How to Fix D3dcompiler_42.dll Missing or Not Found Errors How to Fix Dx8vb.dll Is Missing or Not Found Errors How to Fix D3dx9_24.dll is Missing or Not Found Errors How to Fix D3dx9_34.dll Is Missing or Not Found Errors Fixing Xapofx1_5.dll Missing or Not Found Errors How to Fix D3drm.dll Missing or Not Found Errors How to Fix Microsoft.directx.directinput.dll Errors How to Fix D3dx9_38.dll Not Found or Missing Errors How to Fix D3dx9_29.dll Is Missing or Not Found Errors How to Fix D3dx9_26.dll Is Missing or Not Found Errors How to Fix Microsoft.directx.directsound.dll Errors How to Fix D3dx9_42.dll Not Found or Missing Errors How to Fix D3d9.dll Is Missing or Not Found Errors How to Fix D3d11.dll Is Missing or Not Found Errors Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies