Sometimes a powerful computer may not be enough to run a game, and you have to work hard before finally playing the desired new product. It is worth noting that only the resources of your computer may not be enough for this, because some additional files may be needed. Such as codecs, drivers for various equipment, etc.
One of the most common errors is the absence of certain libraries in the system partition, in particular d3dx9_31.dll. This is not critical for the operation of the computer, but without this file many new games simply will not start. Often, the game comes with a set of software necessary for its correct operation, but its versions may be outdated.
To fix the problem, you need to download d3dx9_31.dll yourself. This file can also be downloaded for free for The Sims 3. This article provides detailed instructions on where to throw the downloaded file, and what to do if this error occurs.
Method one - manual
If, when starting the game, the system displays the error “d3dx9_31.dll...”, then the reason is probably the following:
- The module loaded, but the entry point could not be found.
- The file does not exist on this computer.
- The file was deleted or an outdated version was installed.
You can download the file without SMS and registration. And of course, without viruses and other unwanted software that is installed in a mode hidden from the user.
After downloading, the file will simply need to be moved to the C:\Windows\SysWOW64\ folder if the computer has 64-bit Windows 7, 8 or 10.
If 32-bit is installed, then just go to the System32 folder.
In some cases, copying may require administrator rights, and if you are working under a guest account, you will not be able to copy the file.
Copying the file may take some time, and your computer may not be able to be turned off or restarted. After moving the library, you must manually register it from the command line.
To do this, type CMD in the Start menu search field and press enter. Then enter “regsvr32 d3dx9_31.dll” and confirm. That's all, registration can be considered completed and the applications will work correctly again.
It is also important to regularly update your computer software from Windows Update and create backup system restore points to correct possible problems. After completing copying and registration, it is advisable to restart the computer.
Method two - automatic installation
You can also try to get rid of such an error in the old and proven way - in a new way. This is a complete set of libraries for the correct operation of games and multimedia programs.
On our website you can always find its latest and most current version.
The error that the program cannot be started or the system did not detect the error associated with the d3dx9 31 dll file appears more and more often on the computer screens of Windows OS users. Its appearance may be due to damage, replacement, absence, or placement of the above file by the antivirus program in the “quarantine” section.
Quite often, the cause of the error is damage to the system file by a program - a virus, which, in any case, will lead to the inoperability of a separate component of the operating system or non-system programs, applications and games such as The Sims 3 and others.
The system library in which the error occurs is called DirectX, which is initially installed on all versions of the Windows operating system and, unfortunately, is very vulnerable and is often attacked by viruses.
The file called d3dx9 31 dll refers to software involved in the process of processing multimedia files and computer graphics. And damage to which entails the inability of the program to perform the above functions.
There are two options to solve the problem:
- download the complete library of MS DirectX system files;
- download the d3dx9 31 dll file separately.
Downloading a library of system files from the official Microsoft website
Download DirectX web installer - The program will determine which components are missing and install them itself
Downloading the d3dx9 31 dll file separately
You can download the d3dx9 31 dll file from this link. After downloading, it is recommended to check the file for the presence of virus software with an antivirus program and install it by moving the dll format file to the following system directory:
windows/system32
DOWNLOAD D3DX9_31.DLL FOR 32 BIT (1.1 MB)
DOWNLOAD D3DX9_31.DLL FOR 64 BIT (1.6 MB)
DLL-Files.com Client
This software finds the required DLLs using its own database and installs them on your computer automatically.
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 three-dimensional graphics and helps launch the game in full screen mode; the absence of a component will not only prevent you from using the game 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 function for Windows, it is recommended to review the antivirus software storage; perhaps, when installing the game, the antivirus program blocked the component, considering it a threat to 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 proper 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:
- Determine what bit depth your Windows is;
- For 32 bits, download only the 32bit file;
- For 64 bits, download both 32 and 64 bits;
- Place the 32-bit file in the folder: C:\Windows\System32;
- Place the 64-bit file in the folder: C:\Windows\SysWOW64;
- To register, press the combination Win + R;
- We write the command for 32: regsvr32 name.dll(replace the name with the name of file 32);
- We write the command for 64: regsvr32 name.dll(replace the name with the file name 64);
- Click "OK and restart the PC;
Sometimes d3dx9_31.dll and other DLL system errors can be related to problems in the Windows registry. Several programs can use the d3dx9_31.dll file, but when those programs are uninstalled or modified, sometimes "orphaned" (invalid) DLL registry entries are left behind.
Basically, this means that while the actual path of the file may have changed, its incorrect former location is still recorded in the Windows Registry. When Windows tries to look up these incorrect file references (file locations on your computer), d3dx9_31.dll errors can occur. Additionally, a malware infection may have corrupted registry entries associated with The Sims Castaway Stories. Thus, these corrupted DLL registry entries need to be fixed to fix the problem at the root.
Manually editing the Windows registry to remove invalid d3dx9_31.dll keys is not recommended unless you are a PC service professional. Mistakes made when editing the registry can render your PC inoperable and cause irreparable damage to your operating system. In fact, even one comma placed in the wrong place can prevent your computer from booting!
Because of this risk, we highly recommend using a trusted registry cleaner such as WinThruster (Developed by Microsoft Gold Certified Partner) to scan and repair any d3dx9_31.dll-related registry problems. Using a registry cleaner, you can automate the process of finding corrupted registry entries, missing file references (such as the one causing the d3dx9_31.dll error), and broken links within the registry. Before each scan, a backup copy is automatically created, allowing you to undo any changes with one click and protecting you from possible damage to your computer. The best part is that eliminating registry errors can dramatically improve system speed and performance.
Warning: Unless you are an experienced PC user, we DO NOT recommend manually editing the Windows Registry. Using Registry Editor incorrectly may cause serious problems that may require you to reinstall Windows. We do not guarantee that problems resulting from incorrect use of Registry Editor can be corrected. You use Registry Editor at your own risk.
Before you manually repair the Windows registry, you need to create a backup by exporting a portion of the registry associated with d3dx9_31.dll (eg. The Sims Castaway Stories):
- Click on the button Begin.
- Enter " command" V search bar... DON'T CLICK YET ENTER!
- While holding down the keys CTRL-Shift on your keyboard, press ENTER.
- A dialog box for access will be displayed.
- Click Yes.
- The black box opens with a blinking cursor.
- Enter " regedit" and press ENTER.
- In the Registry Editor, select the d3dx9_31.dll-related key (eg. The Sims Castaway Stories) you want to back up.
- On the menu File select Export.
- On the list Save to Select the folder where you want to save your backup copy of The Sims Castaway Stories key.
- In the field File name Enter a name for the backup file, such as "The Sims Castaway Stories backup".
- Make sure the field Export range value selected Selected branch.
- Click Save.
- The file will be saved with extension .reg.
- You now have a backup of your d3dx9_31.dll-related registry entry.
The following steps for manually editing the registry will not be described in this article, as they are likely to damage your system. If you would like more information about editing the registry manually, please check out the links below.
Checked by antivirus!
Description of the dll file: Microsoft DirectX for Windows
Possible DLL error: d3dx9_31.dll is missing
Compatible Operating System: Windows 7, Windows 8
Our catalog contains the following versions of this library:
How to download d3dx9_31.dll and install it
Open the zip file downloaded from the site. Remove d3dx9_31.dll to a folder on your computer. We recommend that you unpack it into the directory of the program that requests d3dx9_31.dll. If this doesn't work, you will have to extract d3dx9_31.dll to your system directory. The default is:
C:\Windows\System (Windows 95/98/Me)
C:\WINNT\System32 (Windows NT/2000)
C:\Windows\System32 (Windows XP, Vista, 7)
If you are using 64-bit Windows, you should also put d3dx9_31.dll in C:\Windows\SysWOW64\. Make sure you overwrite the existing files (but don't forget to back up the original file). Restart your computer. If the dll error persists, try the following: Open the Start menu and select Run. Type CMD and press Enter (or if you're using Windows ME, type COMMAND). Type regsvr32 d3dx9_31.dll and press Enter.
Attention! It is very easy to download d3dx9_31.dll from the Internet, but there is a high probability of infecting your computer with malicious code. Please scan ALL files downloaded from the Internet with an antivirus! The site administration is not responsible for the performance of your computer.
Please also note that each file has a version and bit depth. DLL files with the same name can be either 32-bit or 64-bit. Installing DLL files into the system does not help in 100% of cases, but mostly problems with programs and games are solved using this simple method. Most often you encounter DLLs when there are errors in the operating system. Some libraries come with Windows and are available for any Windows program. Replacing DLL files from one version to another allows you to independently expand the system without affecting application programs. You can learn more about what a dll is from the primary source - what is a dll.
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