We have development a web app in .Net 4.0, AjaxControlToolKit 3.0.20820.0 and Telerik 2010.3.1215.40. When the app is running under SSL, we get security warining message only from IE8 ( FF, IE7 works fine). I have verified all links are relative and starts with https (I have used http watch). Do I have to setup/update any component?
Update 1: I have removed AjaxControlToolKit reference, used RadAjaxPanel instead of update panel and still I am getting the security warning message in IE8. Also, I have tried securitySwitch, customer httpmodule to redirect any request with http to https, and no luck. I have verified http watch, firebug and fiddler 2, and no request are made in http.
Update 2: I have moved the radgrid outside the RadAjaxPanel and now it doesn't show any warning in IE8. Any postback within RadAjaxPanel does show the warning message.
Any help regards this issue is appreciated.