You can set an expiration date and time for an encrypted virtual machine.

When you set an expiration for an encrypted virtual machine, the local date and time are used. For example, December 12, 2012 11:00am in local time, with the time and date in Universal Time Coordinated (UTC) displayed below.

When an encrypted virtual machine with an expiration date is powered on, the virtual machine verifies the time and compares it to the expiration date. While running, the virtual machine periodically checks the time and stores all successful timestamps as the last trusted timestamp.

If the last trusted timestamp exceeds the date set for the virtual machine expiration, a warning message displays and the virtual machine is suspended.

Once a virtual machine has expired, the administrator of the virtual machine can delete or extend the expiration date. This requires the restrictions password.