The ProfileManager.DeleteInactiveProfiles(ProfileAuthenticationOption, DateTime) method is used to remove unused profile data from the data source for the application specified by the applicationName attribute in the configuration file. Use the authenticationOption parameter to specify whether you want only anonymous profiles, only authenticated profiles, or all profiles to be searched. Of the searched profiles, any profile with a ProfileInfo.LastActivityDate that occurs on or before the specified userInactiveSinceDate parameter value is deleted.

The ProfileManager.DeleteInactiveProfiles(ProfileAuthenticationOption, DateTime) method calls the ProfileProvider.DeleteInactiveProfiles(ProfileAuthenticationOption, DateTime) method of the default profile provider. The default profile provider is specified using the defaultProvider attribute of the profile configuration element. If the user profile contains properties that are managed by a profile provider other than the default provider, the profile information in the other data source is not deleted. To delete inactive profiles that are managed by a profile provider other than the default provider, obtain a reference to the profile provider using the ProfileManager.Providers property and call the ProfileProvider.DeleteInactiveProfiles(ProfileAuthenticationOption, DateTime) method of the provider directly.