You can disable authentication methods from the Authentication Methods page. When you disable an authentication method, if the authentication method is associated with any identity provider, the authentication method is disabled in that identity provider.
The authentication method is also removed as an option in all the access policy rules.
Important: If the authentication method you disabled is configured in an access policy rule, the access policy rule must be updated to select another authentication method. If the access policy rule is not updated, users might not be able to sign in to their apps portal or access their resources.
To disable an authentication for specific built-in identity providers, in the built-in identity provider configuration page, deselect the box for the associated authentication method.