To efficiently prevent spread of devices which do not operate due to failure in program installation and updating.

There are provided: distribution history obtaining means for obtaining, from a storage device, a distribution history which includes device identification information included in a device identification information group included in program information obtained by program information obtaining means in distribution-history device identification information, includes a pre-update version included in the program information in a distribution-history pre-update version, and includes a post-update version included in the program information in a distribution-history post-update version; adding means for adding the post-update version included in the program information to program data if an updating result included in the distribution history obtained by the distribution history obtaining means indicates success in program updating; and responding means for returning the program data to a device as a response to an obtainment request.