@JammyDodger , I’ve recently registered an account at for a free instance: [image] I am unable to register for a free Discourse site id.discourse.com/create-site There, I appear to experience what t/227972 describes, too: OAuth2 SSO 2FA [image] [image] Most documentation appears to…

Moved your post here, because this is a different issue than the Contribute > Bug you posted in originally. Discourse ID is not using OAuth2. It’s functioning, in effect, as an SSO provider, which is different. To configure 2FA, you’d need to do so at the SSO provider, ID. Specifically https://id.…

@jomaxro , thanks. Perhaps, what confused me was that I attempted to set enforce_second_factor to “all”, yet wasn’t able to, because I was informed that “You cannot enforce 2FA if local logins are disabled.” If this isn’t too off-topic, what’s the solution to that?

[image] rokejulianlockhart: You cannot enforce 2FA if local logins are disabled.” If this isn’t too off-topic, what’s the solution to that? That’s a good question … and one I don’t have the answer too. I’ve looped in the team to find someone who does!

So I’ve been corrected by the team. Discourse ID does use OAuth2 under the hood - my apologies. I thought it was using a different protocol. To your question, we do not support 2FA with external logins. As the message you saw stated, 2FA cannot be enforced without local logins being enabled. We re…

@jomaxro , does that mean that, with the free trial plan, I cannot modify that preference? Alternatively, can I somehow disconnect Discourse ID?

Want to confirm, are you referring to a free trial, or the free plan?

@jomaxro , apologies. Free plan, I believe: [image]

[image] jomaxro: We rely on the external login provider (Discourse ID in this case, but this applies to all external providers) to manage 2FA, including enforcement. Question for us: Does the IdP pass along the information of whether or not the user performed MFA to the SP? I’m thinking of …

[image] supermathie: If Discourse ID… or similarly any other IdP (SAML? oAuth2? OIDC?) passes this information along to the SP it would be a piece of information we could potentially use. The standards way to do this is via OIDC. Discourse ID is currently built using OAuth2 only. To support a…

Discourse ID and 2FA

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rokejulianlockhart (Mr. Beedell, Roke Julian Lockhart (RJLB)) April 17, 2026, 10:07pm 17

@jomaxro, apologies. Free plan, I believe:

Topic		Replies	Views
How Discourse ID works Site Management discourse-id	21	2319	January 24, 2026
Discourse ID is now available. Try it today! Announcements discourse-id	39	1692	February 9, 2026
Two-factor local login option Feature	41	14524	February 8, 2018
Cannot enable 2FA after OAuth2 login Bug	1	568	July 9, 2022
How to enable discourse id login in my site SSO discourse-id	3	238	October 26, 2025

Discourse ID and 2FA

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