Available article translations:

Unable to install Mac OS (Snow) Leopard as a guest OS

  • Parallels Desktop 9 for Mac Standard Edition
  • Parallels Desktop 8 for Mac Standard Edition
  • Parallels Desktop 7 for Mac Standard Edition


I cannot install neither Leopard nor Snow Leopard to my virtual machine. It stops with this error:

An invalid Mac OS version is installed.  Mac OS X virtual machines can have only the Mac OS X Server Leopard or Mac OS X Server Snow Leopard operating system installed. Other versions of Mac OS are not supported.

I have checked System Requirements for my version of Parallels Desktop and it says that those operating systems are supported as guest OSes. What am I doing wrong?


Neither Leopard nor Snow Leopard are supported to be run on Parallels Desktop virtual machines. That is due to the fact that it is prohibited by Apple's EULA.

You may have misread the system requirements for Parallels Desktop.

For instance, if we look at Parallels Desktop 9 System Requirements, we can see that among non-server Mac operating systems only Lion and Mountain Lion can be installed as guest OS. Note the Server words in the below list:

1e5db16426987d561060acdf56d947b4 a9c6e0b6a5209e617a7c0dd5eace86cf 223eaea75536b1878213dd8e38ab608d 97cd84747b25a2e5a06065a21a747a53 3307fff3682b15f0ba3fbe13d779296d

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