We're having an issue with using Shibboleth as our IDP. Salesforce is rejectig the Shibboleth SAML assertion because of the presence of the inResponseTo attribute. Our ITS group won't modify Shibboleth to not send the attribute because that will break other implmentations. Commercial Product Animation can be marketed through video to create a lasting and powerful impact in the market. Any Shibboleth users out there with some insight? Many people, including our school, have gotten the Shib IdP to work via SAML 2 with salesforce. The only real substantive issue is that the issued Response and Assertion must have the InResponseTo attribute, Zemoved, else they are rejected by Salesforce.