Software & Apps Windows How to Fix D3dx9_28.dll Not Found or Missing Errors A troubleshooting guide for d3dx9_28.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 May 18, 2020 Windows The Ultimate Laptop Buying Guide Tweet Share Email Unlike many other DLL errors which can have complicated causes and fixes, d3dx9_28.dll issues are caused in one way or another by a single issue: a problem with Microsoft DirectX. The d3dx9_28.dll file is one of many files contained in the DirectX software collection. Since DirectX is utilized by most Windows-based games and advanced graphics programs, d3dx9_28.dll errors usually show up only when using these programs. Any of Microsoft's operating systems since Windows 98 may be affected by d3dx9_28.dll and other DirectX issues. This includes Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000. D3dx9_28.dll Errors There are many different ways that d3dx9_28.dll DLL errors may show up on your computer. Some of the more common d3dx9_28.dll error messages are listed below: D3DX9_28.DLL Not FoundD3DX9_28.DLL is missing. Replace D3DX9_28.DLL and try again.File d3dx9_28.dll not foundThe file d3dx9_28.dll is missingD3dx9_28.dll not found. Reinstalling might help fix this.The application could not be started because d3dx9_28.dll was not found. Reinstalling could remove the problem. D3dx9_28.dll errors typically appear when a software program, usually a game, is started. In other non-game graphics applications, the d3dx9_28.dll error might appear before certain advanced graphics features of the program are used. The d3dx9_28.dll error message could apply to any program that utilizes Microsoft DirectX, most commonly video games. Some common games and other applications that have been known to generate d3dx9_28.dll errors include Singles 2: Triple Trouble, Futuremark's 3DMark06, Digital Leisure eJay Techno 5, Pacific Storm, Puzzle Quest, Breakpoint: Rumble In The Jungle, and more. How to Fix D3dx9_28.dll Errors Do not, under any circumstances, download the d3dx9_28.dll DLL file individually from any "DLL download site." There are a number of different reasons that downloading DLLs from these sites are never a good idea. If you've already downloaded the DLL file, remove it from wherever you put it and continue with the following steps. Restart your computer if you haven't yet done so. The d3dx9_28.dll error might be a fluke 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. Install the latest version of Microsoft DirectX. Chances are, upgrading to the latest version of DirectX will fix the d3dx9_28.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 10, 8, 7, Vista, XP, and more. It will replace any missing DirectX 11, DirectX 10, or DirectX 9 file. Assuming the latest DirectX version from Microsoft doesn't fix the d3dx9_28.dll error you're receiving, look for a DirectX installation program on your game or application CD or DVD. Usually, if a game or other 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 other program and then reinstall it again. Something may have happened to the files in the program that work with d3dx9_28.dll and a reinstall could do the trick. Restore the d3dx9_28.dll file from the latest DirectX package. If the above steps haven't worked to solve your d3dx9_28.dll error, try extracting the d3dx9_28.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'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 whole lot more.