it fixes the issue I had used on the httpModules section, as there were items in the parent that did not exist in the bin dir for the child (/admin) In doing so (using that is ) I had inadvertently cleared the FormsAuthentication module specified in the web.config in C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\CONFIG
How can I sign someone out using forms authentication and wcf
will be helpful for those in need There is currently not a supported means of logging the user out from your site. What you can do is force the user to click the Google+ Sign-In Button before they will be authorized unless you have set a cookie on their client indicating they are signed in (or enrolled, if you want to distinguish between the sign-in action and being signed-in). You can look at this question: how do i sign user out of my app?
Orbeon Forms(open source web forms solution) Single sign on authentication