I'm having some trouble across multiple workstations with uploading folders via the drag and drop method in the OneDrive for Business web app. Dragging from explorer to the onedrive you can see the site respond like it's ready to start uploading but when you let go to start it, nothing happens.
Right now it is working fine for me in Google Chrome and Edge but fails in Internet Explorer. We have a number of users on Windows 7 where it doesn't work for Chrome or IE.
Any thoughts why this would be happening?