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Possible Duplicate:
how to set default program or application for some kind of files

How can I change the default file associations of Windows 8?
Such as changing the default PDF reader to Adobe Acrobat, playing videos not on Xbox video but VLC media player instead?

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marked as duplicate by Karan, Hennes, Canadian Luke, Diogo, soandos Nov 1 '12 at 3:24

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Type def in the Start Screen to open Default Programs, then click either of the first two links.

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Right-click on a pdf file, Select Open With... then Choose Default Program. Default Program

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