I did a update to the latest version DE-5.0.9308.543674 and after that the MacLook doesn't work anymore. It's activated in the menu bar and the guest preferences, but I only got the windows-windows in a form of a box. Tried the following: - Changed the windows-look in in windows via right-click to the desktop. Now I have the normal windows-windows instead of the boxes but no MacLook - Reinstalled Parallels-Tools - Switched between Crystal-, window- and full-screen-mode - Activated and deactivated MacLook several times in combination with guest OS active and guest OS shut down - Restarted Parallels and the guest OS But neither of them did work. Although some people seem to have problems with MacLook everything worked fine for me until the update. Any other suggestions?