NEAppProxyProviderManager.loadAllFromPreferences { (managers, error) in assert(Thread.isMainThread) if let error = error { self.state = .failed(error: error) } else { let manager = managers?.first ?? NEAppProxyProviderManager() self.state = .loaded(snapshot: Snapshot(from: manager), manager: manager) } } Like this NEAppProxyProviderManager(), find the console output：[] MDM must be used to create NEAppProxyProvider configurations