"Parallels Tools require that your Windows is running under Virtual Machine. The installation will be stopped."
appears when trying to uninstall Parallels Tools in the Windows Guest OS after upgrading to Parallels Desktop 3.0
CauseParallels Tools were not uninstalled before the upgrade
- Start the Virtual Machine.
- Go to the Actions menu on the Parallels Desktop menubar - select "Install Parallels Tools"
- Follow Installation Wizard instructions. The old version of Parallels Tools will be automatically updated.
- Restart your Windows Guest OS. Now you should be able to uninstall Parallels Tools after updating it to the most recent version.