Parallels v10.3.0 Host OS: OS X Yosemite 10.10.5 Host: MacBook Pro (Retina, 15-inch, Mid 2014) Guest: Windows 10 64bit Guest RAM: 8GB If I start Disk Management then it crashes the machine! Disk Management only starts is the guest is configured to run with 1 CPU. Using 2, 3 or 4 results in a crash. Other people experiencing this behavior too?