How to upload multiple documents to your SharePoint Site.
This guide will assist you in understanding how to upload multiple documents at one time to a single document library.
**In order to get the windows explorer to work correctly, the SharePoint site must be in the trusted zone of the internet browser.
**This only works with Internet Explorer (32bit) and only on Windows. This does not work like this on a mac.
**The WebServices service must be running on the windows machine (check services.msc)
**If all of above is in place, and you still get an error, sometimes you just have to refresh the internet explorer on the SharePoint site and try again. It usually works the second time.