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Add Or Remove File Type Associations In Windows Vista

It was quite simple to change file type associations in Windows XP from the Control Panel or by selecting: Tools \ Folder Options on the menu of a folder, but in Windows Vista, you can only associate file types, but you can not unassociate a file type. The only option allowed is to associate the file to another program or application. But now you can do in another way…

There are two ways to find File Type Associations in Vista:

Once you have accessed the window for file type association, you can easily associate or change an existing file type, by highlighting a file type, then clicking on the Change Program… button.

NOTE: You will need to click the small down arrow to see the list of Other Programs.

To remove a file type association, you can use a great utility found on winhelponline.com to unassociate file types. Just download, unzip and click on Unassoc.exe. No install is required.

To use, just find the file type you want to delete and click on the Remove file association button. The file type association will be deleted from the registry. Vista will then treat it as an unknown file type.