“d3dx9_30.dll Not Found” Error Fix – How To Repair The d3dx9_30.dll Error On Your PC

The d3dx9_30.dll error is very common on Windows computers, mainly because of how it’s used on your system. The file is used by the “DirectX” platform to help load up many of the advanced graphical features that your system needs to use to run. Although this file is continually being used by your system to help your computer load up the latest games & other information… the fact is that it’s often the cause of many errors which need to be fixed to help your PC run as smoothly as possible again. This tutorial is going to show you how to resolve d3dx9_30.dll errors on your PC in the most effective way.

What Causes The d3dx9_30.dll Error?

The d3dx9_30.dll error will often show in this format:

  • “d3dx9d_30.dll Not Found”
  • “This application failed to start because d3dx9d_30.dll was not found. Re-installing the application may fix this problem.”
  • “Cannot find C:\Windows\system32\d3dx9d_30.dll”
  • “The file d3dx9d_30.dll is missing.”
  • “Cannot start Microsoft® DirectX for Windows®. A required component is missing: d3dx9d_30.dll. Please install the application again.”

The reason why this error will show is all down to the way in which your computer uses the d3dx9d_30.dll file. The platform “DirectX” is what this file has been created for – this is the central advanced graphics application which allows Windows computers to play the latest games and software on your PC. Although this file is continually being used to help your system play the games you want, it’s continually leading to a lot of errors & problems as it’s being saved incorrectly. To ensure that the d3dx9d.dll file does not cause you any further problems, you should first look at resolving the errors that DirectX has, and then any problems that your Windows system may have which are causing the error to show.

How To Fix The d3dx9d_30.dll Error

Step 1 – Replace The d3dx9d_30.dll File On Your PC

The first step to fixing your error is to replace the d3dx9d_30.dll file on your system. This can be done by downloading a replacement d3dx9d_30.dll file from our website and then saving it to your desktop. After that, you should locate the current “d3dx9d_30.dll” file on your system (normally in the C:\Windows\System32 folder) and then rename it to”d3dx9_30BACKUP.dll“. After renaming the file, take the new file you just downloaded and copy it onto the Windows\System32 folder. This should replace the file and fix any problems that it had, however – be prepared to look out for any problems as the file we have available on our website might not be the same / correct one for your system.

Step 2 – “Re-Register” The D3d9x_30.dll File On Your PC

Another big problem for the D3D9x_30.dll file is that it’s continually losing its location & other registration details on your system. All dll files on your computer are stored in a central list which Windows & all your software programs will use to load up the files whenever they need them. Although this list is continually being used to help your computer run smoothly, it’s often the case that a lot of the files listed on it will either change position on your hard drive, or will somehow become damaged. To ensure that there are no problems of this nature causing the d3dx9_30.dll errors on your system, you should look to do this:

– Click Start > “Run” (or press WINDOWS KEY + R)

– Type “CMD” & press enter

– On The Command Prompt, type “regsvr -u d3dx9_30.dll” & press enter

– Then type “regsvr d3dx9_30.dll” & press enter

– Restart your PC

This will basically re-register the d3dx9_30.dll file on your system, allowing Windows to locate the file properly again. This may solve the error in most cases, but if it does not solve it for good, you should look at using step 3:

Step 3  – Repair / Re-Install DirectX

Since d3dx9d_30.dll is used by DirectX, it’s advisable that you then repair or reinstall the installation of this platform on your computer. This is actually quite a difficult thing to do because of the way in which your system actually uses DirectX. Unlike typical software programs which will be installed onto your system, DirectX is kept separate from your system and is “segregated” because of how important it is. If you still have the d3dx9_30.dll errors on your computer, then you should download an update installer for the DirectX Runtime files and then install it on your system. This should update all the files on your PC with the latest versions, fixing any problems that your computer may have with the likes of d3dx9_30.dll

Step 4 – Clean Out The “Registry” Of Your PC

Another common cause of DLL errors is down to corrupt and damaged settings inside the “registry database”. This is a central storage center for all the files & settings which Windows needs to use to run each day. Not many people realize this, but each time your PC uses any piece of software on your computer, it has to read 100’s of registry settings in order to help it run smoothly. Unfortunately, many of those settings will either be damaged or corrupted, leading your computer to act strangely and show a series of errors. To ensure this problem isn’t affecting your computer, it’s recommended you download a registry cleaner program to fix any potential registry errors your system may have.

Recommended DLL Repair:

Fix Your DLL Errors With A DLL Repair Tool

Use A DLL Repair Tool To Fix Your PC

Most DLL errors are caused by the "registry database" of Windows.
This is a storage facility for all the files, settings and options that Windows uses to help it run. The problem is that there is a large list of DLL files your software uses to run - this list is highly important but is continually being damaged, causing the errors you're seeing. You can easily fix this problem by using a "registry cleaner" program to repair any registry errors your system has.