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Error message - missing d3dx9_40.dll or d3dx9_41.dll
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At startup of an appication an error message like this is shown:

„d3dx9_40.dll“ or „d3dx9_41.dll“ is missing on your computer
Reinstallation of the application could solve your problem.
An outdated, incomplete or missing DirectX 9 runtime is the most likely reason for this error. A solution is very easy: You just need to run the most recent DirectX 9 Installer from Microsoft (as of June 2010).

First please download the Installation package for DirectX from Microsoft with the following URL:
http://www.microsoft.com/download/en/confirmation.aspx?id=8109

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Doubleclick the new downloaded file „directx_Jun2010_redist.exe“ and confirm the license agreements by clicking „Yes“.

In the now appearing Windows specify a folder in which the data should be extracted, e.g.: „C:\DirectX\“ or choose an already existing folder by „Browse“ .


Click „OK“ to extract the data to this folder.
After this step is finished the actual installation process can be done. Switch to the folder which you have chosen before. In this folder there is the setup file called „DXSETUP.exe“. Doubleclick this file to initiate the installation process.


You’ll have to accept the Terms and Conditions of the License Agreement once more. Continue clicking "Next" until the installation procedure is completed.


You can delete the folder where the extracted files are in after the successful installation.

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