Hi, Since my app migrated from NSUserNotifications to UNUserNotification API I get 'ghost' notifications that will trigger regardless they were remove from NSUserNotificationCentre. See sample code: - (void)applicationDidFinishLaunching:(NSNotification*)notification { // Do all launch setup // Get notification center and install or update notification categories UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter]; [center getNotificationCategoriesWithCompletionHandler:^(NSSet<UNNotificationCategory*>* categories) { if (categories.count == 0 || needNotificationUpdate) { UNNotificationCategory* reminderCategory = [UNNotificationCategory categoryWithIdentifier:kReminderIdentifier actions:@[[UNNotificationAction actionWithIdentifier:kActionIdentifier title:@"Action" options:UNNotificationActionOptionForeground]] intentIdentifiers:@[] options:UNNotificationCategoryOptionHiddenPreviewsShowTitle]; [center setNotificationCategories:[NSSet setWithObject:reminderCategory]]; } }]; // Install daily reminder (hourly for the scope of testing) NSUserNotification* userNotification = notification.userInfo[NSApplicationLaunchUserNotificationKey]; if (userNotification == NULL && !self.foregroundNotification) { UNNotificationTrigger* trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:3600.0 repeats:YES]; UNNotificationRequest* request = [UNNotificationRequest requestWithIdentifier:kReminderIdentifier content:content trigger:trigger]; [center addNotificationRequest:request withCompletionHandler:^(NSError* error){}]; } } - (void)userNotificationCenter:(UNUserNotificationCenter*)center willPresentNotification:(UNNotification*)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler { self.foregroundNotification = YES; completionHandler(UNNotificationPresentationOptionAlert); } - (void)userNotificationCenter:(UNUserNotificationCenter*)center didReceiveNotificationResponse:(UNNotificationResponse*)response withCompletionHandler:(void (^)(void))completionHandler { if ([response.notification.request.identifier isEqualToString:kReminderIdentifier]) { // Do notification action } UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter]; [center removePendingNotificationRequestsWithIdentifiers:@[kReminderIdentifier]]; [center removeDeliveredNotificationsWithIdentifiers:@[kReminderIdentifier]]; completionHandler(); // At this point the notifications are removed from notification center // However they will come back one hour later. Those 'ghost' notification no longer launch the app or trigger actions. } I get those ghosts since weeks now and cannot find any way to get rid of them. Is there a way to do a deep reset for all notifications of an app ? Any advice is welcome. Regards, Jérôme Tarantino