Assertion Expired immediately on RH-SSO with external IdP with Clock Skew

Solution Verified - Updated -


  • We are getting a Login timeout. Please login again. message on browser after a successful redirection from external SAML IdP to RH-SSO server. The RH-SSO server.log shows the following error message:

    18:08:44,375 ERROR [] (default task-1) Assertion expired.
    18:08:44,376 WARN  [] (default task-1) type=IDENTITY_PROVIDER_RESPONSE_ERROR, realmId=saml-broker-authentication-realm, clientId=null, userId=null, ipAddress=, error=invalid_saml_response
  • The log shows "NotBefore" with a time after the log timestamp.


  • Red Hat Single Sign-On (RH-SSO)
    • 7
  • SAML identity brokering with external IdP (Identity Provider)
  • Successful redirection from IdP to RH-SSO server

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In