Fixing the "Authentication failed" error when setting up an external account

Summary

Article explains steps to follow when you get this specific "Authentication failed" error message when setting up an external account in Gmail.

Body

Issue

Client is trying to setup an external account to send email as their MC account.

Client is getting error message: "Authentication failed.  Please check your username/password and Less Secure Apps access:

image depicting how to allow less secure apps on

Server returned error: "535-5.7.8 Username and Password not accepted.  Learn more at 535 5.7.8 https://support.google.com/mail/?p=BadCredentials k11sm2783653qkh.51 - gsmtp code(535) "

image depicting the add another email address you own setup

 

Solution

Using the following instructions to  setup 2 Factor Authentication and generate an app specific password.

Click here to obtain instructions for Gmail Access to less Secure Apps

 

Details

Details

Article ID: 40598
Created
Tue 10/10/17 3:34 PM
Modified
Wed 12/13/23 10:34 AM

Related Services / Offerings

Related Services / Offerings (2)

Google Workspace Support
Google Workspace Training

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Tue 10/10/17 3:34 PM
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Tue 10/10/17 3:34 PM
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