CloudKit share acceptance still requires a UIWindowSceneDelegate on iOS. Can try this approach ---- Keep SwiftUI lifecycle @main struct MyApp: App { var body: some Scene { WindowGroup { ContentView() } } } Add SceneDelegate import UIKit import CloudKit class SceneDelegate: UIResponder, UIWindowSceneDelegate { func windowScene( _ windowScene: UIWindowScene, userDidAcceptCloudKitShareWith metadata: CKShare.Metadata ) { acceptShare(with: metadata) } } Register it in Info.plist UISceneDelegateClassName = SceneDelegate