Technical Tip: Fix SAML access denied error, failed to create SP

[kiri]

Description	This article provides a solution to the SAML auth error 'Access denied' shown to the end user by the SP/firewall. Depending on the firmware version, the displayed error might be slightly different.
Scope	FortiGate v6.X v7.X.
Solution	Run the following debug on the firewall whilst the end user is authenticating: diag debug console timestamp enable diag debug reset diag debug app saml -1 diag debug enable Depending on the setup, another command set might be helpful. For example, if this is for SSL VPN, add diag debug app sslvpn -1 to the command set. If this message is seen in the SAML debug from FortiGate CLI: 2023-06-22 07:01:30 [15478:root:57][fsv_found_saml_server_name_from_auth_lst:123] Found SAML server [azure.ad.sso] in group [test1] gen_sp_server [325]: Failed to create SP Check the SAML configuration on the FortiGate. This is usually caused by incorrect 'config user saml' parameters like 'set single-sign-on-url'. config user saml     edit "azure.ad.sso"         set entity-id "https://fgt.local:8443/remote/saml/metadata"         set single-sign-on-url "https://fgt.local:8443/remote/loginlang=en"         set single-logout-url "https://fgt.local:8443/remote/saml/logout" 'set single-sign-on-url' is incorrect in this example, it must be https://fgt.local:8443/remote/saml/login Make sure the URLs are correct and the same on both sides, SP and IdP. They are usually copiable and pasteable on both SP and IdP. Related articles: Troubleshooting Tip: Common problems and causes when using SAML with SSL VPN  Troubleshooting Tip: Companion for troubleshooting SSL VPN with SAML Authentication