If one is desperate, there is also the option of the classic Webview control in Visual Studio (or even the old VB6 version) which with little bit of UI added around it, can substitute for the real IE for certain enterprise legacy webapps.
A bit more effort, can also lock the control to only browse to the intended web service, and launch the default browser for any external links.
There's kind of a market for this type of solution in the legacy enterprise app space I think.