Upload files using Windows Explorer instead Not Available – SharePoint 2013

When you try to upload multiple documents to document library in SharePoint 2013 you may notice that the option “Upload files using Windows Explorer instead” to upload multiple document is not available or hidden.

Issue

There is many reasons behind this, one of them is you are opening the document library Internet Explorer 64-bit.

Solution

Just open it in Internet Explorer 32-bit.

Result