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Auth0 Callback URL Mismatch Error

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Ongoing Web, SPA, Mobile Updated November 13, 2026Based on 4 user reportsHow we research

Quick answer

A callback URL mismatch means the URL your app sends as redirect_uri is not in the application's Allowed Callback URLs. Add it there, and make sure any social provider points back to Auth0 correctly.

Most likely fix: Add the URL to Allowed Callback URLs

How to fix it

Try these in order — the most common fix is first.

  1. 1. Add the URL to Allowed Callback URLs

    1. Dashboard > Applications > your application > Settings
    2. Under Application URIs, add the callback URL to Allowed Callback URLs (separate several with commas)
    3. Save Changes
    Did this fix it?

  2. 2. Check the identity provider callback

    1. If login never returns to Auth0, verify the identity provider has the correct callback URL for Auth0
    2. In a HAR file, look for a call to the /login/callback endpoint to confirm the return happened
    Did this fix it?

Symptoms

Auth0 shows "Oops!, something went wrong - Callback URL mismatch. The provided redirect_uri is not in the list of allowed callback URLs."

Why it happens

  • redirect_uri not listed in Allowed Callback URLs
  • Wrong application edited in the dashboard
  • Identity provider configured with an incorrect callback URL for Auth0

This guide also covers

  • auth0 callback url mismatch
  • auth0 redirect_uri is not in the list of allowed callback urls
  • auth0 oops something went wrong

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