One of the most common errors related to Windows libraries is D3dx9_42.dll. It’s a library of well-known DirectX, which is actively involved in processing of 3D graphics and other multimedia functions. It is especially important for computer games and software working with graphics. Some DirectX libraries are included in Windows 7, 8 or 10, but it’s not enough for work of serious games. Usually with the game the libraries needed for its work are also installed. But, over time, they can be corrupted by malware, or even removed. In this case, when you start the game appears an error window that says that missing D3dx9_42.dll. So, we need to get this library in its place to make the game operational. Often this error appears when launching the game World Of Tanks

This can be done in two ways:

  • Download DirectX and install it
  • Download file D3dx9_42.dll

Now you know what kind of error is D3dx9_42.dll and why it appears, it’s time to start treating it. Download DirectX of needed version. After that, install it and reboot. Now you have all the necessary libraries, the error should disappear. This method of restoring the dll is safe and simple, but requires more time than the second. It helps in most cases, but not always.

What to do if the error persists after you installation of DirectX? You can reinstall the problematic game, but it barely helps. Fastest and most reliable way is to download the desired file. Here you can download D3dx9_42.dll for Windows 7/8/10 it’s not important, it’s the universal library, no need to look for a special dll for your operating system. Place the downloaded file in the folder for dll and register it, then restart your computer. Now the game will start. This method is faster than the first, but if you start with it, then it might pop up an error with another dll file.

Download d3dx9_42.dll

  • OS Windows XP, Vista, 7, 8, 10
  • Bit 32/64bit
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