Hi, On a Mac Pro Retina (late 2012, Mac OS 10.8.4) I am running a Win7pro virtual machine using Parallels 8 latest build. When I want to shut down Win7, Win7 displays the message that the application prl_cc.exe can not be closed and thereby blocks shutting down Win7. I can force closing down, but then the rainbow disc takes over and the system is blocked for 3 to 4 minutes. I realized, that a similar problem was observed in earlier Parallels versions (3 to 5) with Win XP, however there was no reference to that problem in Parallels 8. Any ideas? Suggestions? Thank you very much for your help in advance. Best, si6pack