Remove the Download (or Sync) to Excel link on OneDrive for Business shared folders page
When sharing a folder (publically, within the org, or to specific people) there's a button to sync or download to Excel on my OneDrive page. "No, it couldn't be," I thought. I logged off, followed the share link, and sure enough, it was still there. So I clicked it. Excel bloomed, and I was looking at the folder tree of my ENTIRE OneDrive! Of course, I submitted a ticket, and was told that I should use the "classic version" as this is a "design issue." Sorry, but this is a design PROBLEM. This kind of an issue and the quality of the response is yet another (and, perhaps final) reason why I haven't yet moved everyone on to the Microsoft platform.