An image forming apparatus can prevent deletion of necessary data, when partially deleting a bundle development area, wherein the image forming apparatus holds information for identifying a file to be treated as a deletion target exception when an application is deleted, specifying an application to be a deletion target from among a plurality of kinds of applications, and deleting a file related to the specified application, such that in deletion, the file, serving as the deletion target exception, identified based on the held information, is not deleted.