Open with Windows Explorer is Disabled in SharePoint 2013 or in SharePoint 2010? Well, Open with Explorer works only in 32 bit version of Internet Explorer! It may not work on Chrome or Firefox.
To enable Open with explorer, Open your SharePoint 2010 or SharePoint 2013 site with 32 bit version of Internet explorer, located at: "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
Getting error on clicking open with explorer in SharePoint 2013? Well, Use this checklist to resolve: Open with Windows Explorer Error and Solutions for SharePoint
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