I’m developing an MVC5 application that’s been configured to use ADFS as Identity Provider with the web app acting as a Relying Party. The app is behaving differently on IE9 and Chrome as far as authentication is concerned.
When I run the app on IE9 for the first time and go to a page that requires the user to be authenticated, IE asks me to authenticate as expected. But when I launch a new IE9 window and navigate to the same page, IE asks me to authenticate again which is not expected as it should know I am already logged in. However this does not happen on Chrome, i.e. the second instance of Chrome knows I am already logged in.
Similarly, on IE9 when I log out of the application on one instance the other instance thinks I am still logged in, whereas when I run two instances of Chrome and I log out on one, the other knows I’m logged out.
How can I get IE9 to behave the same as Chrome? Is this some configuration issue on ADFS or do I need more server side code in the application to ensure IE9 behaves properly?
Many thanks in advance