D3dx10_43.dll issues are caused in one way or another by an issue with Microsoft DirectX.
The d3dx10_43 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, d3dx10_43.dll errors usually show up only when using these programs.
Any of Microsoft’s operating systems since Windows 98 may be affected by d3dx10_43.dll and other DirectX issues. This includes Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.
There are many ways d3dx10_43.dll errors can show up on your PC. Here are several of the more common error messages you might see:
- D3dx10_43.DLL Not Found
- The file d3dx10_43.dll is missing
- File d3dx10_43.dll not found
- D3dx10_43.dll not found. Reinstalling might help fix this.
These errors usually appear when a game or other software program is starting. However, DLL errors aren't limited to that time only; they can occur at any point when the file is needed, like when you try to perform a certain action in the program, when the program is trying to update, or when you're nearing the end of using the software and are about to close it.
The d3dx10_43.dll error message could apply to any program that utilizes DirectX, but it's most commonly associated with video games.
Total War: ARENA, Arma 3, World of Tanks, Grand Theft Auto, Just Cause 2, Red Orchestra 2, and DC Universe Online (DCUO) are a few examples of games that have been known to show a d3dx10_43.dll error message either after you select the Play button or when the game is first trying to open. We've also seen users report this DLL error in relation to SteamVR.
How to Fix D3dx10_43.dll Errors
Follow these steps in the order they're listed in below to try the more likely fixes first.
Do not download d3dx10_43.dll individually from any “DLL download site.” There are several reasons why downloading DLLs like that is never a good idea. If you’ve already done so, remove it from wherever you put it and continue with these steps.
Restart your computer if you haven’t yet.
The d3dx10_43.dll error might be a fluke and a simple restart could clear it up completely. In fact, restarting is a common method for fixing many computer problems.
Install the latest version of Microsoft DirectX. Chances are, upgrading to the latest version of DirectX will fix the d3dx10_43.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 d3dx10_43.dll error you're receiving, look for a DirectX installation program on your game or application DVD or CD. Usually, if a game or other 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 d3dx10_43.dll and a reinstall could do the trick.
Sometimes, a complete uninstall using a program uninstaller tool is the best way to get rid of every remnant of a program so that you’ll have a better chance at a successful reinstall.
Restore the d3dx10_43.dll file from the latest DirectX software package. If the above troubleshooting steps haven’t worked to solve your error, try extracting the d3dx10_43.dll individually from the DirectX downloadable 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.