Here is the code that I use on my side and it works without any issues:
Settings mySettings = new Settings();
mySettings.Web.DefaultBrowser = BrowserType.InternetExplorer;
Manager myManager = new Manager(mySettings);
myManager.Settings.UnexpectedDialogAction = UnexpectedDialogAction.DoNotHandle;
NativeWindow window = new NativeWindow();
MessageBox.Show(window, "This is a message!");
MessageBox.Show(window, "Second Message");
I also recorded a short video
Please record a short video to show us the issue you are experiencing. Jing
is great for this.
Looking forward to hearing from you.