Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Server Authentication

  • 1 jibu
  • 0 wana tatizo hili
  • 25 views
  • Last reply by T3cH

KSI
KSI
more options

I cannot receive or send any emails. Server is not authenticating. This is a sudden fault. Thunderbird is updated to 128.0.1esr (64-bit). Opening Thunderbird shows message "Authentication failure while connecting to Thunderbird imap.gmail.com”.

What is the fix for this?

I cannot receive or send any emails. Server is not authenticating. This is a sudden fault. Thunderbird is updated to 128.0.1esr (64-bit). Opening Thunderbird shows message "Authentication failure while connecting to Thunderbird imap.gmail.com”. What is the fix for this?

All Replies (1)

T3cH
T3cH
more options

Hi KSI,

Make sure you allow cookies for accounts.google.com and Oauth2 is enabled on both IMAP and SMTP servers. It's detailed in the below article.

https://support.mozilla.org/en-US/kb/thunderbird-and-gmail#thunderbird:win10:tb115