WebBrowser.Navigate(…) throws COMException

Question

I\'m developing an Internet Explorer command button that will open a specific web page once clicked. Here\'s a snippet of code (IEApp is a reference to an instance

Answer 1

That's ERROR_BUSY usually happens when IE is doing something else, e.g. displaying a window.alert message box.
Try suppress script errors and Implement IDocHostShowUI and return S_OK without blocking the message pump