Yes, you can use TurboActivate in a virtual server. However, if the VM moves between real servers then the fingerprint might change and need continual re-activation. That's one of the reasons we recommend using TurboFloat on VMs instead of TurboActivate. See: http://wyday.com/limelm/help/vm-hypervisor-licensing/ and http://wyday.com/limelm/help/using-turbofloat/