I cannot seem to get middle clicking to work for any virtual machine (Windows 8.1, Ubuntu 14.10, Windows 7) using Parallels 9.0.24251 under OS X 10.9.5 (Mavericks). I've tried turning on the middle click in the Mouse Shortcuts, and have the modifiers to be a bunch of different things. Nothing works. There was a question back in December 2013 asking if middle clicking had suddenly broken, but there was no followup, either by the OP, other users, or Parallels Support. Is this a known bug? Is this something fixable?
Hi Bill, Please submit a Problem Report ID http://kb.parallels.com/9058 and provide us the ID number here, so that we can check it for you.