Enable Single Sign-On Integrations for Applications
By default, seamless single sign-on (SSO) is enabled for all new Auth0 tenants; however, legacy tenants may choose whether to enable this feature at the tenant level. If you have not enabled tenant-level SSO, you may enable it per application.
You can enable an SSO for your application using the Auth0 Dashboard.
Before enabling SSO for an application, you must first create and configure a connection for each identity provider you want to use. For social identity providers, make sure the connection is not using developer keys if you use the Classic Universal Login Experience.
Go to Auth0 Dashboard > Applications > SSO Integrations, and select the name of the integration to view.
Scroll to the bottom of the Settings page, locate Use Auth0 instead of the IdP to do Single Sign-on, enable the toggle, and select Save Changes.