Why won't my DragDrop handlers fire?

Question

Created a WinForm app, set AllowDrop property on the form to true, wired up the drag handlers (enter, exit, over and drop) and they weren't firing. Why not?

Answer 1

I always launch visual studio from a shortcut that runs it as Administrator (because I often do socket stuff that requires admin rights). But my windows explorer shell is not executing as admin, so it disallows the drop due to permissions.

Relaunching VS without admin permissions fixes the problem.