Mohammed MAROUAN Kindly see the below link that illustrate how to setup SSO, i think your links could be wrong:

https://www.sagecity.com/us/sage_x3/f/announcements/186306/sage-x3-sso-authentication-through-azure-ad-saml2/507707#507707 

Hello Liberty.petja, I followed this tutorial, but I am encountering the same error. I am unsure about the meaning of "server.active is not a function."

Mohammed MAROUAN Kindly log this with your local support, this is a defect, and it has been fixed on Syracuse 12.18.4.2 or download it on the FTP Public\Sage X3\X3 Hotfix\X3 V12\Hotfix - Patches\Syracuse

Patch done but i  see this message

login.saml2 | error | Signature of ID provider SAML2 does not fit to certificate certificattest: invalid signature: for uri #

my certificat it's good i used the some certifcat of my V11 version some configuration copy past between v11 and v12

any  idea?

Mohammed MAROUAN  Kindly remove the SAML2 certificate and test to see if it's the certificate.

 Liberty.petja  Thank you for your reply 

I can now connect without a SAML2 certificate. What kind does Sage v12 accept? Because I used the same certificate in v11

or i need change something in my configuration ?