ASP.NET MVC - WS Federation - Single Sign out

Question

I'm implementing SSO (Single Sign On and Single Sign Out) for my applications. Let's say I have

1. Application "A" that is
   • Hosted on https://app1.test.com
   • Is registered in AD on-premise with Wtrealm same as https://app1.test.com
2. Application "B" that is
   • Hosted on https://app2.test.com
   • Is registered in AD on-premise with Wtrealm same as https://app2.test.com

I've used this blog as reference to implement Single Sign On in both the application. https://blogs.msdn.microsoft.com/sakamati/2015/07/06/creating-owin-based-ws-federation-application/

The problem I'm facing with is for Single Sign Out. When I do sign out in one application, the session in other application still remains active.

What am I missing so that the Single Sign Out will work for both the application?

Answer 1

When you say "Is registered in AD on-premise" do you mean "Is registered in ADFS on-premise"?

Are you following the steps as per this using "wa=wsignout1.0"?