Hi! I have set up a discourse instance. The first time, I did not configure SMTP in order to set up Discourse ID, which did work. But then I reinstalled the whole app - this time configuring SMTP during setup. Now, when I try to enable Discourse ID via the Admin panel, it does not work. And it say…

Yes, please send me a PM here with the URL of your instance and I’ll clear the existing credentials. (This is a temporary fix, we’re in the process of making this workflow better.)

Can't set up Discourse ID: Application with this redirect URI already exists

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nathank (Nathan Kershaw) March 19, 2026, 6:03pm 4

Thanks for helping me with the same problem!

Looking forward to the flow improving in future.

1 Like

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Can't set up Discourse ID: Application with this redirect URI already exists

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