How to download d3dx9_43.dll from Microsoft's official website

The typical actions of a novice user, when he sees a message when starting a game that the program cannot be launched because d3dx9_43.dll is missing from the computer - to start looking on the Internet where to download d3dx9_43.dll for free. The typical result of these actions - wandering in doubtful sites, and the game still does not start.

In this instruction - steps on how to fix the error The program can't start because d3dx9_43.dll is missing from your computer in Windows 10, Windows 8 and Windows 7 and why it appears (English version of the error: The program can't start because d3dx9_43.dll is missing from your computer); on how to safely download the original file from the Microsoft website and why you should not download this file from third party sites. Also, at the end of the article there is an instructional video on how to fix the error.

How to fix the "Computer is missing d3dx9_43.dll" error when starting a game or program

In order not to find where to download d3dx9_43.dll for free and not to download malware to your computer or laptop, it is useful to ask yourself: what is this file?

The answer is that this file is part of the DirectX 9 components needed to run many non-newer games and some application programs, it should be in the C: WindowsSystem32 folder (but don't rush to copy there downloaded from somewhere d3dx9_43 .dll).

Normally the reasoning of the user is: but I have installed DirectX 11 in Windows 7 or 8, or even DirectX 12 in Windows 10, but this is not enough: by default, the system does not contain libraries (DLL files) of previous versions of DirectX, and yet some games and programs need them.

And for these libraries to appear, just use the official Microsoft installer, which will automatically add them to the system, thus solving the errors "The program cannot start because d3dx9_43.dll is missing from the computer."

Download d3dx9_43.dll from the official website

To download d3dx9_43.dll for Windows 10, 8, and Windows 7, as well as other DLL files you may need to run a game or program that won't start (and most likely requires more than this file), follow these steps :

  1. Go to Microsoft's official page https://www.microsoft.com/ru-ru/download/details.aspx?id=35 and download the DirectX End-User Executable Libraries web installer.
  2. Run the downloaded dxwebsetup.exe executable file. Accept the terms and conditions and decline the installation of additional software (currently offers Microsoft Bing panel installation).
  3. Wait for the installation to complete - the program will automatically download all the missing (old but updated) Microsoft DirectX libraries.

Done. After that, the d3dx9_43.dll file will appear in the correct location (you can check it by going to the C: WinsowsSystem32 folder and looking there), and the error stating that this file is missing should not appear again.

Loading d3dx9_43.dll - video tutorial

Just in case, a video on how exactly DirectX is installed, including the d3dx9_43.dll library needed to fix the error and failure to start the program.

Why you shouldn't download d3dx9_43.dll and other libraries from download sites

As mentioned above, most users, instead of figuring out what kind of DLL is needed and what components it is a part of, look for a way to download it separately, resulting in a mass of sites specifically "tuned" for those users. .

This is the wrong course of action for the following reasons:

  • The site may contain malware, or just a "dummy file" with the correct name, but without the correct content. The latter variant can lead to a deadlock, leading a user hitting the "regsvr32 d3dx9_43.dll" keys to the wrong decision that it is time to reinstall Windows, and so on.
  • Even if you know "where to dump" this file and how to register it on the system - most likely it will not fix the error on startup: the program will only report that it needs some other file (because games that use DirectX require much more of a DLL of it).
  • That is the wrong approach, which in the long run is destined not to solve the problem and fix the errors, but to create new ones.

That is all for now. If you still have questions or something doesn't work as expected - leave a comment, I'll try to answer it.