Title: Gmail Authentication Error
Last modified: May 19, 2022

---

# Gmail Authentication Error

 *  Resolved [KarKo](https://wordpress.org/support/users/kkotha82/)
 * (@kkotha82)
 * [4 years ago](https://wordpress.org/support/topic/gmail-authentication-error/)
 * I have been using this plugin for a couple of years. A few days back I was notified
   that I needed to reauthenticate the Gmail service. I am using the Setup wizard
   to authenticate, but as soon as I click the “Connect to Google” button, the Google
   Login page shows an error – Error 400: redirect_uri_mismatch. You can’t sign 
   in to this app because it doesn’t comply with Google’s OAuth 2.0 policy. If you’re
   the app developer, register the redirect URI in the Google Cloud Console.” View
   the [screenshot](https://prnt.sc/WbYJ4VsrwtVR)
 * Please let me know if I did something wrong. Thank you.

Viewing 1 replies (of 1 total)

 *  Plugin Support [Darshana](https://wordpress.org/support/users/darshanaw/)
 * (@darshanaw)
 * [4 years ago](https://wordpress.org/support/topic/gmail-authentication-error/#post-15665557)
 * Hi [@kkotha82](https://wordpress.org/support/users/kkotha82/),
 * Thanks for reaching out! Could you please check your Google App and make sure
   to add the following Authorized redirect URI to your app.
 * [https://connect.wpmailsmtp.com/google/](https://connect.wpmailsmtp.com/google/)
 * In case it helps, we have a full guide on how to set up your Google connection,
   including setting up your Google Project: [https://wpmailsmtp.com/docs/how-to-set-up-the-gmail-mailer-in-wp-mail-smtp/#create-app](https://wpmailsmtp.com/docs/how-to-set-up-the-gmail-mailer-in-wp-mail-smtp/#create-app)
 * I hope this helps. Thanks!

Viewing 1 replies (of 1 total)

The topic ‘Gmail Authentication Error’ is closed to new replies.

 * ![](https://ps.w.org/wp-mail-smtp/assets/icon-256x256.png?rev=1755440)
 * [WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin](https://wordpress.org/plugins/wp-mail-smtp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-mail-smtp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-mail-smtp/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-mail-smtp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-mail-smtp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-mail-smtp/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Darshana](https://wordpress.org/support/users/darshanaw/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/gmail-authentication-error/#post-15665557)
 * Status: resolved