A client apparatus that communicates with a management server to receive an instruction from the management server, and a power supply of the client apparatus transitions to a sleep state when the client apparatus does not receive a user operation for a certain time period, and after the power supply of the client apparatus transitions to the sleep state, the power supply of the client apparatus temporarily transitions to a normal state without receiving a user operation. After the client apparatus communicates with the management server, the power supply of the client apparatus transitions from the normal state to the sleep state.