Troubleshooting Tip: Redirection to the SAML IDP is not working and getting the error 'the response from; https://<IP>:<Port> was invalid

[Rajneesh]

Description	This article describes the issue where the user is getting the following error when trying to authenticate for SSL VPN using SAML.
Scope	FortiGate.
Solution	From the attached image it can be noted that, when the user is trying to connect to the SSL VPN using the FortiClient, the message comes that 'the response from; https://<IP>:<Port> was invalid.'. To fix this issue, perform the following: config user saml     edit "Azure"         set cert "Certificate”   ------> Unset this certificate and then save the settings to fix the issue. end This certicate is used to sign SAML messages, and it is optional to use.