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Age of Empires 3 : D3Dx9_25 Error

Thread Question:

I just recently purchased Age of Empires 3. When i launched the application i get...
"The application has failed to start because d3dx9_25.dll was not found. Reinstalling the application may fix this problem."

How to fix this problem ?? My pc specs are p4 3.0 ghz, 512mb ram, 256mbb nvidia agp card with sp2 with all latest drivers.

Posted by: pbu
Date: 2005-11-29

Subject: Re:D3Dx9_25 Error
Posted by: admin | Date: 2005-11-29

The problem is directx 9.0b comes preinstalled with windows xp sp2 and there is no way that you can update directx 9.0b to directx 9.0c. To fix this these are possible solutions i propose you.

1. Try uninstalling WinXp sp2 and install previous versions of windows xp. Since previous versions comes with directx 8.x versions preinstalled, updating those versions to direct x9.0c would work fine. THIS WORKED FINE WITH ME.

2. Try uninstalling directx 9.0b using direct x uninstallers like DirectX Happy Uninstall ( or tools.

3. Inorder to fix this error, you have to download this file from and copy this to AOE3 folder.


Also, if you know any other methods to fix this problem, please post this at: which would help someone who comes with the same problem.

Subject: Re:D3Dx9_25 Error
Posted by: JeanAHough | Date: 2011-06-27
You can get the D3Dx9_25 Error file from the above link.
this is the source which is best for solving this sort of dll related issues.
Click the Link on this page “Run a Free DLL Scan” and it will fix it for you.

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