(Fixed) ‘D3dx9_40.dll is Missing’ Issue

The ‘D3dx9_40.dll is Missing’ is a DLL (Dynamic Link Library) System File that Microsoft makes available for Windows 7, Windows 8, Windows 10, and older versions. These.dll files have instructions that different pieces of software may need to run properly.

Even though the error messages look different, they often have the same cause. Most of these errors happen because the programme in question can’t call the d3dx9 40.dll file. This could be because it’s not on your system or because it’s not working right.

Most of the time, users get errors about the d3dx9 40.dll file when they try to open an older game that uses optional DLL files that came with the DirectX 9 package. If a.dll file is missing, like the d3dx9 40.dll file, it can cause a number of different error messages.

Solve: ‘D3dx9_40.dll is Missing’ Issue

Install the latest version of Microsoft DirectX

First, you should try to get the most recent version of Microsoft DirectX and install it. This method has helped many users fix errors, so it may help you as well. So, go to the Microsoft Download Center, search for “DirectX,” and download the latest version of “DirectX End-User Runtime Web Installer.” After that, run the installer and follow the instructions on the screen to finish setting up DirectX. Then, restart your computer and see if the problem is gone.

Uninstall and reinstall the problematic software

Sometimes the wrong software or game is the cause of the problem. You might get this error if the programme wasn’t installed right or if the files for installing the software are damaged. If the first method didn’t work, try uninstalling the problem software and then reinstalling it to see if the problem is fixed.

First, open the Settings app by pressing Win + I. Then, go to Apps > Apps & features and find the problem software in the list of installed apps. Click the software’s three-dot menu button and then click the Uninstall option. Follow the steps to finish taking the software off your computer.

Delete the corrupted d3dx9_40.dll

If none of the above fixes work, you can try something else. You can replace the corrupted d3dx9 40.dll file with a new copy. Most likely, the error happened because something was wrong with the system. So, in this case, you should be able to fix it by finding the good d3dx9 40.dll file on your system.

To replace the DLL file in question, we will first delete it and then restore it from the latest DirectX package. If you can’t delete the file, you can try renaming it. Let’s look at how to get the d3dx9 40.dll file back. First, use the hotkey Windows + E to open File Explorer and look for the d3dx9 40.dll file here: C:\Windows\System32

Then, find the file called d3dx9 40.dll and delete it. If you can’t delete the file or get a different error message when you try, you can try renaming it with the. Old extension. After that, open File Explorer and go to C:WindowsSysWOW64.

Scan Your System For Malware And Viruses

System File Checker (SFC) is a tool in Windows that lets users check Windows system files for problems and fix them if they find any. This guide shows you how to use the System File Checker tool (SFC.exe) to scan your system files and fix any that are missing or broken (including .DLL files). If a Windows Resource Protection (WRP) file is missing or broken, Windows might not work as expected. For example, Windows might not work right or it might crash.

1. Use an antivirus software to do a full scan of the whole system. Don’t count on Windows Defender alone. It is better to use more than one antivirus programme at the same time.
2. When a threat is found, you need to reinstall the programme that gives you this warning. Most of the time, you need to reinstall the programme to get rid of the problem right away.
3. If none of the above steps worked, try restoring the system when it starts up.
4. Reinstalling your Windows operating system is your last resort.

Use a registry cleaner

Registry Cleaner is a powerful programme that can get rid of unused files, fix problems with the registry, find out why your PC is running slowly and fix them. It is perfect for working on a PC. A user’s registry can be quickly scanned and cleaned by someone with administrator rights.

1. You can download the programme to your Windows system.
2. Now, install and run the programme. The programme will automatically clean up and fix the parts of your computer that are giving you trouble.
3. If this step doesn’t work, try the next one.

you can visit Microsoft support center for further help.

What is d3dx9_40.dll

Errors with D3dx9 40.dll are common when trying to run programmes that need “Microsoft DirectX” to work properly. Most errors happen when you try to run a game, since games are the most common type of programme that needs “Microsoft DirectX.” “Microsoft DirectX” is also used by graphic design programmes like AutoCAD that are more complex.

Problems with “Microsoft DirectX” are linked to D3dx9 40.dll errors because D3dx9 40.dll is one of many files that must work and be in the right place for “Microsoft DirectX” to work properly. You can fix problems caused by a broken D3dx9 40.dll file by downloading and reinstalling the file. An error caused by D3dx9 40.dll could happen on most Microsoft “Windows” operating systems, and the only way to fix it is to download a new D3dx9 40.dll file.

FAQ

Where to install d3dx9_39 dll

Most of the time, the problem can be fixed by reinstalling the d3dx9 39.dll file in the Windows system folder. Or, some programmes, like PC games, need the DLL file to be put in the folder where the game or application was installed.

How do I manually fix dll errors

dll errors. If the User32. dll error message came up while you were installing a programme, a piece of hardware, or a driver, uninstall the programme, the piece of hardware, or the driver. Then you need to restart Windows and reinstall the programme, hardware part, or driver.

How do I fix a missing dll on my computer

1. Put the Program back on.
2. Run System File Checker Scanner.
3. Use the DISM Tool.
4. Use a File Recovery Tool to get back deleted DLL files.
5. Get the DLL file the hard way.
6. Upgrade Windows.