Get Rid Of The Error Shown While Associating Application Programs To Supported File Extensions In Windows Vista

In Windows Vista, you are sometimes unable to associate application programs such as ACDSee, TTPlayer, foobar2000, Nero etc. to file extensions even though the programs support those particular extensions.

It is basically User Account Control (UAC) security feature that prevents you from registering or setting file associations properly. It does not allow you to access, modify, change or edit the system registry, if you are running the process or program with low privilege mode which lacks elevated administrator rights.

You get a message saying that an error has occurred while changing/modifying file type associations and you need to get in touch with the system administrator if you happen to use a limited account.

The file type associations fail while the setup installation procedure is running or when you try to register the file associations from the application program itself. This happens as the UAC restricts you from setting file associations successfully if you are not running your setup installer or application program in elevated privileges with administrator rights.

This is the reason why a particular file still opens in default Windows program even after you attempt to associate its file extension with a third party application program. For e.g., even after you try to associate .JPG file extension to a third party picture/image editor, the .JPG file will still get opened into Windows default tool like Windows Photo Gallery.

You can make use of any of the two workarounds in order to get rid or this error related to associating some programs to file extensions.

As the first solution, you need to run the application program (if file type association has been done during the installation process, you need to run the setup installer) in elevated privilege mode without UAC constraint. For doing so, you need to right-click on the application program or program executable and select the option “Run as Administrator” from the context menu.

As the second option, you may as well turn off or disable the UAC security feature so that you are no more required to have elevated administrator rights to access or modify file associations.

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