I have RP added to ADFS 3.0 for SSO. This is SP initiated sign-on. Whenver I add the sp initiated url to intranet zone it gives me a blank page from domain joined machines. However, it works good when I remove it from intranet zone and add it to trusted site. It doesn't promt for password and gets me directly in to the site. That is what exactly I want, user should not be prompted for password in intranet. But I am scared if I do not add it to the intranet zone, after a period of time it will start prompting me for password. I want a seamless sso in intranet.