I have a site that uses an SSO solution with another site. It does this by embedding an iFrame in the site for login.
The issue that I am having is that with Chrome and Safari, it does not save the login cookie when 3rd party cookies is disabled.
The site uses ASP.net. I have added the P3P header with a value of CP="CAO PSA OUR" in IIS. Its still not working. Does something else need to be done for Safari and Chrome?