I am developing an addin for AutoCAD using c# with a WPF xaml dockable pane, I would like to sometimes show a webpage in the pane so I am using the WebBrowser, however it is not displaying the HTML5 content well as it defaults to IE7. using FEATURE_BROWSER_EMULATION I should be able to point it to using IE11 if installed, however setting the application that the addin is loaded into in the registry isnt working. I also tried the dll file that my addin creates and this doesnt work either. Is there a way to tell my WebBrowser in my dll within acad.exe to use IE11?