Edit for future readers: This has been solved. It was a bug with Discourse social logins and fullscreen_login. For those using Keycloak as their SSO provider like me, make sure you: Set your valid redirect URI to https://yourforum.com/auth/oidc/callback Set your Root URI to the same thing. Make su…

I just fixed an issue relating to ‘full screen login’ registrations for open communities (login_required communities were not affected). Please try updating Discourse and see if that helps. FIX: Fix registration dialog popup for 'full screen' social logins …

OpenID Connect extension not creating new Discourse users

Support

Topic		Replies	Views
Setup DiscourseConnect - Official Single-Sign-On for Discourse (sso) Integrations sso , configuring , discourseconnect , how-to	46	455808	May 27, 2026
CSRF problem in development with 'Discourse OpenID Connect' plug-in Development	8	1070	October 28, 2023
Integration into custom auth system where emails are not unique? SSO email	40	1472	June 6, 2024
Discourse OpenID Connect (OIDC) Plugin official , included-in-core , auth-plugins , openid-connect	48	49208	May 27, 2026
Configure sign up and log in with Auth0 using the OAuth2 Basic Plugin Integrations auth-plugins , oauth2 , how-to , sso	73	19944	December 16, 2025

OpenID Connect extension not creating new Discourse users

Related topics