Hi there, I want to launch external app on Holo. Now, since the System.Process is unavailable, I can't just run process. So I want to use URI launcher, but with options configured to recommend app: Code (CSharp): var options = new Windows.System.LauncherOptions(); options.PreferredApplicationPackageFamilyName = "Contoso.URIApp_8wknc82po1e"; options.PreferredApplicationDisplayName = "Contoso URI Ap"; // Launch the URI var success = await Windows.System.Launcher.LaunchUriAsync(uri); My problem is, I cannot get Unity to recognize Windows.System namespace. I can get to work Unity Launcher.Uri residing in UnityEngine.WSA, but that does not allow me to configure launch options, as far as I can see. Any advice? Best regards