Disclosed are a network device management system and method of controlling the same for simplifying the operation of a client application and making it possible to reduce traffic in process-to-process communication. By way of inter-process communication, a client apparatus requests a server apparatus for log information relating to a device connected on a network. Using a prescribed protocol, the server apparatus acquires the device-related log information and transmits this information to the client apparatus by inter-process communication. The client apparatus stores the device-related log information acquired from the server apparatus and, based upon newly acquired log information, changes a display of device-related log information and print job status information.