SSO Error in passwordless login

[mathiasconradt]

Maybe you can take one of the Quickstart projects from your application quickstart tab (Auth0 Dashboard), run it locally, see if that works (with the same clientID). This way you know whether it’s an issue with the Auth0 application configuration (in the Dashboard > Application Settings) or the way it’s called from your client application.

I’ve seen this error message before in the forum. Maybe some of these are helpful:

There was an error fetching the SSO data

Can you verify that you have done the additional configuration mentioned here: Configure Features to Use Custom Domains Basically you need to correctly set configurationBaseUrl and overrides object. Just to be clear, /ssodata is deprecated only with embedded login - not universal login; so you’re not doing anything wrong, only a misconfiguration most probably.

Error fetching the SSO data with new Tenant

After checking with our support team, If you have enabled Seamless SSO in the tenant it will produce a 404 with /user/ssodata . It can be safely ignored, but definitely can be confusing if looking at it from the dev tools console. I apologize for the confusion!

Can not reach to authentication

Just to update in case anyone else is experiencing a similar issue, the recommendation here is to replace the use of the getSsoData function with checkSession (documentation here: Lock API Reference). That way the application is using the latest (and recommended) endpoint. (This migration should happen before July as the /ssodata endpoint will be removed - follow details here: Important - Auth0 Public Disclosure).