OAuth Error

OAuth Error: redirect_uri_mismatch

Last updated: April 2026

OAuth Error Response

error: redirect_uri_mismatch error_description: The redirect_uri does not match any registered redirect_uris.

The redirect_uri in your authorization request does not exactly match any URI registered in your provider dashboard. The match is case-sensitive and includes protocol, domain, port, and path.

Diagnose OAuth errors →

Common mismatches

https://yourapp.com/callback    # registered
https://yourapp.com/callback/   # sent — trailing slash mismatch

https://yourapp.com/callback    # registered
http://yourapp.com/callback     # sent — HTTP vs HTTPS

http://localhost:3000/callback  # registered
http://localhost:3001/callback  # sent — port mismatch

Fix by provider

Auth0: Application Settings → Allowed Callback URLs.

Okta: Application → Sign-in redirect URIs.

Google: Cloud Console → Credentials → Authorized redirect URIs.

Cognito: App client → Callback URLs.

Debug — find the URI your app sends

# Check the authorization URL your app constructs
# Look for redirect_uri= parameter — must match registered URI exactly