Understanding SAML Cookie Issues: Why You Keep Redirecting to the Login Page
Visual Overview: sequenceDiagram participant User participant SP as Service Provider participant IdP as Identity Provider User->>SP: 1. Access Protected Resource SP->>User: 2. Redirect to IdP (SAML Request) User->>IdP: 3. SAML AuthnRequest IdP->>User: 4. Login Page User->>IdP: 5. Authenticate IdP->>User: 6. SAML Response (Assertion) User->>SP: 7. POST SAML Response SP->>SP: 8. Validate Assertion SP->>User: 9. Grant Access Single Sign-On (SSO) is a cornerstone of modern identity management, enabling seamless access to multiple applications with a single login. However, for many organizations, the promise of SSO often falls short when users are repeatedly redirected to the login page. This frustrating experience is frequently caused by misconfigured SAML cookies. In this article, we’ll dive into the technical details of why this happens, how to diagnose the issue, and how to resolve it to ensure a smooth SSO experience. ...