I have created a custom ASP.NET STS using the visual studio template. I have not changed any code in it other than changing the config for the certificate. I have added this as a Claim Provider trust in adfs2. I have setup a relying party in ADFS2.
So I request the relying party URL, it redirects to ADFS home realm page. I select the custom STS one. It sends me to my custom STS, I login successfully then it sends it to
http://test.local/adfs/services/trust
where i get a service unavailable HTTP Error 503 page!
I tried the same with 2 ADFS2 servers and that all works fine.
Any ideas in whats wrong with the custom STS?