SSO connection is activable in your Organization's space in your Dashboard interface.
As soon as you define an admin for this Organization the configuration link will be sent to the related email address.
This new feature handles the end user SSO process while IT admin hasn't completed the configuration
Detected issue
Until now, between the configuration link sending and the completion of the SSO configuration, end users could enter in the related SSO login process even if the required configuration weren't completed.
New behavior
From today, SSO processes will require both SSO Connection to be active (from your dashboard) and that the latest success try of the IT admin.
Until then end user won't be able to access an unconfigured/active SSO.