The GTA and Sims series games have gained immense popularity among gamers. Unfortunately, they occasionally contain the D3dx_31.dll error. This library is part of DirectX and is responsible for full-screen mode in video games. If the D3dx9_31.dll file is missing or damaged on your computer, you will not be able to enjoy your favorite game. This issue is especially relevant for those who prefer to download games from torrents. Builds and repacks can modify standard libraries, after which the antivirus safely quarantines them. The modified file is not always able to interact normally with the game, which also results in an error. IN licensed versions games, all the necessary libraries are usually installed along with the game, but sometimes the D3dx9_31.dll error happens to them too. What to do if this trouble happened to you?

You can fix the error in the following ways:

  • Download D3dx9_31.dll for Windows 7,8,10
  • Reinstall DirectX package

The fastest way to solve the problem is to simply download the D3dx9_31.dll library from the Internet. After downloading, you need to put it in the appropriate folder, which varies depending on the bit depth operating system. You can download the working file for the game Sims 3 or GTA from us. After the dll is on your hard drive, you need to put it in the system folder and register it. Then restart your computer and try to enable the problematic application.

You may see a new error with a different dll from the DirectX package. So it makes sense to reinstall the entire package. It is distributed free of charge, the best source is the Microsoft website, links to which are on our website. No need to rack your brains about how to install DirectX, just click next. Installing the latest version of the package will replace all its files, so the problem with D3dx9_31.dll and other libraries will be solved for sure.

D3dx9_31.dll is a file that is part of the DirectX software package that is installed to load and operate gaming applications. Opening a game or application may be accompanied by an error that prevents the game from opening and notifies the user that D3dx9 31 dll is missing from the computer. The D3dx9 31 dll file is responsible for displaying 3D graphics and facilitates the launch of the game in full screen mode, the absence of the component will not only prevent you from using the gaming application in windowed mode, but will also prevent it from starting. To fix the error, the user needs to install the required library component using one of the methods.

Before using the D3dx9 31 dll free download feature for Windows, it is recommended to review your antivirus software repository, perhaps when installing the game antivirus program blocked the component, considering it a threat to the operation of the system. If you find a file in storage or in the Recycle Bin where it may have been placed, you should restore it.

If the Recycle Bin or Storage does not contain the required component, users can update the DirectX File Library, which will automatically install all the components required to run and function gaming applications such as: The Sims 3, Need For Speed, Grand Theft Auto 4, Skyrim, World of Tanks and many others. Installing a file library will prevent errors from appearing notifying you that other components that are responsible for running applications and games are missing.

In order to fix the error and normalize the operation of multimedia applications, you can resort to installing a separate component that was not found during loading. To do this, download the D3dx9 31 dll component and manually install it on the system. For correct installation you need to select a folder where to place the file. The storage and installation location is determined by the bitness of the system, which can be viewed in the “Computer” folder by opening properties.

How to fix the error?

Method 1.

The file D3dx9_31.dll belongs to the DirectX 9 library, so it’s enough to install it if you don’t have it, or reinstall it if yours is damaged.

Method 2.

This is an additional option for correcting this error, in which files are added manually and registered in the system.

File registration sequence:

  1. Determine what bit depth your Windows is;
  2. For 32 bits, download only the 32bit file;
  3. For 64 bits, download both 32 and 64 bits;
  4. Place the 32-bit file in the folder: C:\Windows\System32;
  5. Place the 64-bit file in the folder: C:\Windows\SysWOW64;
  6. To register, press the combination Win + R;
  7. We write the command for 32: regsvr32 name.dll(replace the name with the name of file 32);
  8. We write the command for 64: regsvr32 name.dll(replace the name with the file name 64);
  9. Click "OK and restart the PC;

This error most often occurs when starting games such as The Sims 3 or GTA 4. A window appears with the message: “The program cannot be started, d3dx9_31.dll is missing.” The missing library in this case is a file included in the DirectX 9 installation package. The error occurs because the DLL is simply not present in the system or is damaged. It is also possible that its version is not suitable for this application. The game needs a specific file, and in Windows system there is another one. This happens extremely rarely, but it cannot be ruled out.

Even if the latest DirectX is already installed, this will not help in this situation, since older versions are not saved automatically. You will still need to install d3dx9_31.dll. Additional libraries are usually included with the game, but if you use "repacks" then this DLL may not be included in the package. The file may also be missing as a result of a virus.

You can use various methods fixes the problem with d3dx9_31.dll. All you have to do is download the web installer and let it install all the missing files. In addition, there are programs that are created specifically for carrying out such operations. There is also the option of manually copying the library to the system directory.

Method 1: DLL-Files.com Client

This software finds the necessary DLLs using its own database and installs them on the computer automatically.

To use it, you will need:


The application provides additional opportunity installing specific versions. To use this feature you will need:


Method 2: DirectX Online Installer

To use this method, you need to download a special program.

On the download page you will need to set the following parameters:


Method 3: Download d3dx9_31.dll

This method involves simply copying the library to a directory:

C:\Windows\System32

This can be done using the usual method or using file drag and drop.

Since different versions Windows folders for installation are not always the same, it is recommended to read, where the installation process for such individual cases is described in detail. Sometimes you may need to register the DLL yourself. How this can be done is described in

  • Determine the bitness of your operating system (32 or 64 bits)
  • Select the appropriate language and latest version DLL
  • Download and unpack the archive into the program folder

If it didn't help me

Don't worry! There are many more options for installing the file. Read more about this in a separate article.

Download d3dx9_31.dll for Windows

We found versions 2d3dx9_31.dll for you

Errors related to d3dx9_31.dll

If you landed on this page, you most likely encountered one of the following messages:
  • Entry point not found d3dx9_31.dll
  • d3dx9_31.dll is missing
  • Error loading d3dx9_31.dll. The specified module could not be found.
  • d3dx9_31.dll is either not designed to run on Windows or it contains an error.
  • Startup is impossible because There is no library on the computer
  • The program cannot be launched because d3dx9_31.dll is missing
  • The program can"t start because d3dx9_31.dll is missing from your computer.
  • The entry point to the dll procedure was not found d3dx9_31.dll
  • There was a problem starting d3dx9_31.dll. The specified module could not be found
  • DLL entry not found
They are given as an example and may vary. Such errors may occur when you first launch the game, programs, reinstalling Windows, may be the cause of a software failure and incorrect operation programs.

DLL is a file with a certain set of functions necessary for the operation of a specific program. In our database, d3dx9_31.dll is responsible for:
Without this file, the program that requires it will not start.

Why is d3dx9_31.dll not found on my computer?

If it is missing from your computer, there could be many reasons for this:
  • First launch of the program
  • Developer miscalculation
  • Incorrect OS configuration
  • Unlicensed Windows
  • Illegal copy of the program (game)
In most cases, the real reason is not very important and you can fix everything yourself using our service.

Each of you has probably encountered the d3dx9_31.dll error on your computer at least once. In an attempt to solve the problem, a person searches for the missing file on the network and often downloads a virus to the PC or laptop. In this article we will tell you how to safely download d3dx9_31.dll and correctly add it to the system.

The file belongs to the Microsoft DirectX library, which is needed for rendering 3D graphics in games, for example, Sims 3, GTA 4, etc. If one or more components are missing, naturally, the game will not start, and the user will see the following message: The program cannot start because d3dx9_31.dll is missing . In most cases, the error appears due to DirectX being completely missing, or sometimes one of its components is damaged. Below we will look at what it is, what the problem is, how to fix it and launch the game we need.

Solving the problem

There are two ways to fix the situation: install DirectX or add its missing component. The first method is preferred, but for completeness, we will describe both of them.

Attention! Use the file option only if the game does not start after reinstalling DirectX.

Installing DirectX

Let's fix the error when starting the game by Microsoft installations DirectX. This library contains all the dlls necessary for any game to work, including ours.

  1. To get started, download the official software installer and run it. Here we will be asked to accept the license of use - to do this, check the radio button as we did in the screenshot. We strongly do not recommend searching for DirectX on the Internet. There are a lot of fakes that will install a bunch of unnecessary software or, even worse, a virus on your computer.
  1. Here we need to remove the small, invisible checkbox that tends to download and install unnecessary software on our computer. When this is done, click on “Next”.

As a result, the library, and along with it all the necessary components, will be downloaded and installed on the PC. All that remains is to try to launch the game. Sometimes you also need to restart your computer for the changes to be applied.

Download and install the d3dx9_31.dll file separately

This method does not guarantee the successful launch of the game. There is only a small chance that after adding the file to the system directory and to the game folder, the latter will start working. Still, we have no right not to mention an option that, at least theoretically, can lead to success.

  1. First of all, download it to your computer or laptop. The archive has a .zip extension, so you don’t need an archiver to open it - any Windows operating system can handle it. We extract the file depending on the bit depth of the system and put it in a convenient place. Next, copy the required component to the system directory of Windows XP, Windows 7, Windows 8 or Windows 10.

If you have an x32-bit system:

C:\Windows\system32

x64-bit system:

C:\Windows\sysWOW64

To determine the bitness of your system, use the keyboard shortcut Win + PauseBreak. In the window that opens, you will see the architecture of the operating system (indicated in the screenshot with a red frame).

  1. Now copy the downloaded file to the game folder. Place it in the directory that contains the .exe files that run it. After this, you need to register the components. We will do this through command line. In Windows 10, you can open it through search. To do this, click on the magnifying glass icon and enter the word in the search bar cmd . We right-click on the result that appears and select the section indicated in the picture with the number “3”.

After applying the changes, be sure to restart your PC and only then try to launch the game.

Let's sum it up

In the article, we told you where to download d3dx9_31.dll for free and how to correctly install it on the system as a single file and a Microsoft DirectX library. If you have any difficulties or just want to ask us a question, write it in the comments - we will definitely help every user.


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