I am following the TechNet article, "Set up a trust between Shibboleth and Windows Azure AD", run the following command :
Set-MsolDomainAuthentication DomainName $dom federationBrandName $dom -Authentication Federated -PassiveLogOnUri $url -SigningCertificate $cert -IssuerUri $uri -ActiveLogOnUri $ecpUrl -LogOffUri $logouturl -PreferredAuthenticationProtocol SAMLP
No error for this command.
But when I launch a SP-initiate(from Office365)SSO, it does not work. I trace the http heards, I can not find any infor about SAML Request. I can only see some parameters "wa","wrtreaml", it looks like WS-Federation.
So How can I set PreferredAuthenticationProtocol to SAMLP for Office 365? Am I miss something?