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Hi Folks, I am building a SwiftUI based WatchOS app primarily focused on updating a complication using data from a REST API call. I am trying to reproduce the approach to updating complications in the background as described in "Keeping your complications up to date". The trouble I have is that the func handle(_ backgroundTasks: Set<WKRefreshBackgroundTask>) method on the ExtensionDelegate is never called for the WKURLSessionRefreshBackgroundTask task type. The handle method is invoked for other task types such as WKSnapshotRefreshBackgroundTask. After some refactoring, I have deviated from the approach in the video and I now reshedule the background task in the func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) method of the URLSessionDownloadDelegate. This works fine, and the tasks are being resheduled in the background, but my concern is that there maybe a WKURLSessionRefreshBackgroundTask object lurking in the background for which I haven't called setTaskCompletedWithSnapshot. My session is configured as follows: private lazy var backgroundURLSession: URLSession = { let appBundleName = Bundle.main.bundleURL.lastPathComponent.lowercased().replacingOccurrences(of: " ", with: ".") let sessionIdentifier = "com.gjam.liffeywatch.\(appBundleName)" let config = URLSessionConfiguration .background(withIdentifier: sessionIdentifier) config.isDiscretionary = false config.sessionSendsLaunchEvents = true config.requestCachePolicy = .reloadIgnoringLocalCacheData config.urlCache = nil return URLSession (configuration: config, delegate: self , delegateQueue: nil ) }() and the scheduling code is a follows: func schedule(_ first: Bool) { print("Scheduling background URL session") let bgTask = backgroundURLSession.downloadTask(with: LiffyDataProvider.url) #if DEBUG bgTask.earliestBeginDate = Date().addingTimeInterval(first ? 10 : 60 * 2) #else bgTask.earliestBeginDate = Date().addingTimeInterval(first ? 30 : 60 * 60 * 2) #endif bgTask.countOfBytesClientExpectsToSend = 200 bgTask.countOfBytesClientExpectsToReceive = 1024 bgTask.resume() print("Task started") backgroundTask = bgTask } Does anyone have any idea's why the handle method is not invoked with WKURLSessionRefreshBackgroundTask tasks? Cheers, Gareth.