Expected Behaviour: Pentaho service provider URL redirects to Gluu IDP authentication page for credentials. Actual Behaviour: But SP redirects to Gluu IDP shows decoding error and not login page for credentials. Minimized Example: For Example, Pentaho Service Provider (configured with 8.1 kar file and supporting files) https://pentaho.tpt.org/pentaho is requesting to gluu idp shibboleth for authentication, redirects to the URL https://gluu.tpt.org/idp/profile/SAML2/POST/SSO. Instead of showing login page, We are getting below message. Can you help me to fix this issue? I need to sort out this issue without clearing cookies and cache of the web browser. !!! ------------------------ ERROR An error occurred while processing your request. Please contact your helpdesk or user ID office for assistance. This service requires cookies. Please ensure cookies are enabled in your browser, then go back to your desired resource and try to login again. Use of your browser's back button may cause specific errors that can be resolved by going back to your desired resource and trying to login again. If you think you were sent here in error, please contact technical support Error Message: Error decoding authentication request message ---------------------------------------------