I have a related party application that can accept SAML 1.0 and 2.0 over WS-Federation. I configured my claims and trust relationship manually and everything works as expected.
I inspected the token being passed and realized it is SAML 1.1 token. (saml:Assertion element has MajorVersion and MinorVersion set to 1).
I re-ran "Add Relying Party Trust Wizard" and made sure I that selected "AS FS Profile" under "Choose Profile" - as it specifically mentions SAML 2.0 Protocol (which as I understand is not the same think as SAML 2.0 token being passed withing WS-Federation protocol, but seemed hopeful). I also combed through all remaining settings and I cannot see a setting to select token type.
How do you choose between SAML 1.0 and SAML 2.0 token when you configure Trust Relationship in ADFS?
I am actually not 100% sure which version of ADFS I am using, but "ADFS Management" shows version 188.8.131.52