How can I restore the default file associations in Windows 7?

A friend of mine accidentally selected the option which makes Adobe Acrobat the default option for opening ALL file types in Windows 7.

How can I help him restore the defaults to what they were?  I'm finding that having him edit the individual file associations (ie Internet explorer for .url) is not working.

Thanks for your help in advance.

MCC 2011


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Last updated August 15, 2020 Views 312,606 Applies to: