Hello @Tom Osenbach ,
Thank you for reaching out Microsoft Q&A.
I Understand that you are following Microsoft SAML SSO documentation for Zendesk Platform and you are directly initiating the login flow using direct link but when you go to the myapps/microsoft apps portal, it redirects to the JSON Login.
As it is being redirected to the JSON login while accessing through the MyApps portal, please make ensure that in the Basic SAML Configuration section, you provide the Zendesk URL in the Sign on URL text box using the following pattern: https://<subdomain>.zendesk.com
. You can verify the correct Sign on URL in the SAML Configuration page, in which you can contact the Zendesk Client support team to obtain these values.
If the issue persists after checking the points mentioned above, make sure to attach a screenshot that you're encountering when accessing through the MyApps portal for better troubleshooting the issue.
for additional information follow: https://learn.microsoft.com/en-us/entra/identity/saas-apps/zendesk-tutorial?source=recommendations
https://learn.microsoft.com/en-us/entra/identity/enterprise-apps/application-sign-in-other-problem-access-panel
Hope this helps. Do let us know if you any further queries.
Best Regards,
Goutam Pratti.