ACS as a Federation Provider–Home Realm Discovery Part 2http://blogs.msdn.com/b/eugeniop/archive/2011/02/10/acs-as-a-federation-provider-home-realm-discovery-part-2.aspxIn my previous post, I had a question for all you: What would happen if Adatum’s FP didn’t supply ACS with the whr parameter? An the answer is: ….. ACS will simply ask the user!   ACS has no way (besides the whr parameter) of knowing where to goen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)