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I accidentally make Pidgin the default app for Yahoo Messenger URI scheme (ymsgr://) in Google Chrome. Now, whenever I click on a Yahoo Messenger URI scheme, instead of appearing a popup chat box, nothing happens. How can I change the default app to associate with this URI scheme back to Yahoo Messenger?

I found a similar problem here. But I am using Windows 7, not Ubuntu, so the solution cannot be applied in my situation.

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Try Control Panel\Programs\Default Programs\Set Associations

or Start> Default Programs> Associate a file type or protocol with a program

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