Description

When authenticating a user through a Google Cloud Application for your Nylas application, the 400 error below occurs when the app has an issue with Google's standards. The error message below happens when attempting to sign in for the user.

Error 400: redirect uri mismatch

You cannot access this app because it does not comply with
Google's OAuth 2.0 policy.

Resolution

Confirm the the URL https://api.nylas.com/oauth/callback is listed as an Authorized Redirect URI in your Google Cloud project.

Reference

• Create a Google Application Guide

Updated June 21, 2024 10:16