An embedded device communicates with another device via an external proxy server acting for the embedded device to control communication. The embedded device includes a communication device capable of communicating with the proxy server, a storage unit storing a state of communication with the other device, an updating unit, a response unit responding to the task with a result of the updating of the communication state that has been performed in accordance with the control request, and a control instruction unit transmitting, to the proxy server by means of the communication device, an instruction for changing a state of communication with the other device in the proxy server to the communication state stored in the storage.