A communication device includes a receiving unit that receives, from a computer running a virtual machine that can be switched between an active state and a stopped state, screen information provided by the virtual machine; a display unit that displays the screen information; a judging unit that, from the screen information displayed by the display unit, based on a number of operation procedures required for a process to be performed, judges whether the virtual machine performing the process by the operation procedures is to be stopped; and a transmitting unit that transmits a signal to the computer running the virtual machine judged to be stopped for stopping the virtual machine.