The file d3d9.dll is part of the DIRECTX installation package of the 9th version. First of all, you need to deal with the causes of the error. It often appears in the following games: CS: Go, Fallout 3, GTA: San Andreas and World of Tanks. This is due to the physical absence of the file itself or damage it. Also, which is extremely rare, there may be incompatibility of versions. The game is adapted to the operation of one version, and the system is another.
Method 1: download D3D9.dll
If there is a single problem associated with only one DLL, it can be installed manually. To do this, you will need to download the library itself and drag it to the Windows system directory:
C: \ Windows \ System32 - 32 bits
C: \ Windows \ System32 and C: \ Windows \ SYSWOW64 - 64 BIT
Perhaps additionally dll will be needed to register in the system. Follow these steps:
- Open the "Start" and find the "command line". Run the application on behalf of the administrator.
- Write the REGSVR32 D3D9.DLL command and confirm the action of the Enter key. When adding a file and "SYSWOW64", write also regsvr32 "C: \ Windows \ syswow64 \ d3d9.dll".
- If an error appears or the method is not suitable, use other embodiments of this action.
Read more: Register the DLL file in Windows
Method 2: Installation DirectX
Provided that there is no DirectX 9 on the computer completely, the previous way is not suitable: thus it will be necessary to download a few more DLLs, and probably the same thing will have to do in the future. Instead, it is better to install them packet. We offer you to use the individuals of Windows 10, telling how to do this, because in their case the directories are already built into the operating system, which cannot be said about "seven" and other old versions of this OS.
Read more: Reinstalling and adding the missing DIRECTX components in Windows 10
To use this method in Windows 7, you need to download an auxiliary program.
On the download page, you will need:
- Select the language you use the operating system and click "Download".
- Agree with the terms of the agreement, then click on the "Next" button.
- Press FINISH.
Next, launch the downloaded installer.
Wait for the process to complete. The program will automatically do the required operations.
After that, D3D9.dll will be in the system, and the error reporting on its absence will no longer appear.
Method 3: Reinstalling the game or check its files
An obvious recommendation that often corrects all errors associated with its launch. If you use a pirated copy, we recommend moving to the license assembly, from which no items are cut out. Otherwise, another installer should be searching, preferably not modified by lovers. Those who use game clients can check the integrity of the game files or simply reinstall it through the client. Consider how you can check the files in Steam and Origin.
Steam
- Open the "library" in your gaming client.
- From the list, find a problem game, click on it right-click and go to "Properties".
- Here you need the Local Files tab.
- Enter the "Check the integrity of the game files" and wait until the procedure is over.
- Try to run the game.
Origin.
- Open the client and switch to the Library tab. Here, find the tile with the game, click on it right-click and click on "Restore".
- Immediately checking. Progress can be seen in the same tile.
- Upon completion, you will receive a notice and you can try to run it.
Method 4: Check system files
The latest recommendation can be called more universal in similar situations. It turns out to be effective indefinitely, however, in some cases, this test helps to eliminate all the difficulties that have emerged with different areas of the operating system, which are somehow related to the use of libraries. In addition, the user is just enough to run it with a console team, everything else will do it alone.
Read more: Using and restoring the integrity of system files in Windows
With the non-response of all methods that were considered in the article, we advise you to check the computer for virus infections. Those often block the ability to launch any system applications that violate the stability of Windows, which can partially affect the DLL.
Read more: Fighting computer viruses