Open the same document library in Internet Explorer as this functions does not work with Firefox or Chrome by default 3. I’d recommend you use IE 8,9,10 32-bit for optimal Performance. Since SharePoint fully support IE 32-bit version above 7, there might be compatibility issue with other browsers.In SharePoint Server 2007, click Actions, and then click Open in Windows Explorer. In SharePoint Server 2016, SharePoint Server 2013, or SharePoint Server 2010, click the Library tab, and then click Open with Explorer. In SharePoint, click the View menu and then click View in File Explorer.