Troubleshooting

Google: Error 400: redirect_uri_mismatch

The return address is not in the Authorized redirect URIs of the OAuth client in the Google Cloud console. The slightest difference (http, trailing slash, port) makes it refused.

Google: “Error 400: redirect_uri_mismatch”Google

Cause probable. The return address is not in the “Authorized redirect URIs” of the OAuth client in the Google Cloud console. The slightest difference (http, trailing slash, port) makes it refused.

What to do? In the Google Cloud console, open APIs & Services, then Credentials, then the OAuth client, and add the exact address. Wait a few minutes for the change to propagate.

To see exactly which check fails, paste the response into theanalyseur, or paste the message into the diagnostic.

Related errors

Okta: the user is not assigned to the application (access_denied)
Okta: the redirect_uri is not in the allowed list

All SAML and OpenID Connect errors

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