ResolutionTo upgrade Windows XP virtual machine to Windows Vista, please, perform the following operations:
- Open virtual machine's Configuration window by pressing on "Configure" button or by choosing "Configure" option in "Virtual Machine" tab in Parallels Desktop menu at the top of the screen:
- Switch to "General" tab
- Change operating system version from Windows XP to Windows Vista
- Start the virtual machine and initiate the upgrade procedure in a usual way.