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How to change a downloaded file from opening in windows media player?

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I have downloaded my nursing e books. A few options were given to open it; windows media player or adobe. IAdobe wouldn't open the ebook so I then chose media player and it also will not run it. I want to delete the download and reinstall it but can not seem to actually get it deleted. I go back to the link and chose download ebook and it automatically tries to open still in media player.

I have downloaded my nursing e books. A few options were given to open it; windows media player or adobe. IAdobe wouldn't open the ebook so I then chose media player and it also will not run it. I want to delete the download and reinstall it but can not seem to actually get it deleted. I go back to the link and chose download ebook and it automatically tries to open still in media player.

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Do you see this file extension or MIME type in Options/Preferences -> Applications?

You can rename/remove the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder: