I am having a heck of time getting Sharepoint libraries to open in explorer consistently. If I go into a sharepoint library within IE and click the open in explorer button absolutely nothing happens. Once I click "Tools"-"Add Site to Apps" with IE the library will open in explorer. I have to do this every time I close the browser. I have added the site to trusted sites.
What is it about "Add Site to Apps" that allows that open in explorer feature to work?