In windowed manner, this function is synchronous. Until finally you established Managed to real or even the party handler returns, the browser approach is blocked and outgoing cross-method COM calls will fall short with RPC_E_CANTCALLOUT_ININPUTSYNCCALL. All CoreWebView2 solutions function, on the other hand. In windowless manner, the event is asynchronous. https://tomc062ghi9.ltfblog.com/profile