Authentication failed for Gmail account. Update your server settings.

[itsDevBlaze]

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

Thunderbird 8.2

Where did you get the app from?

Google Play

Android version

Andriod version 14, One UI version 6.1, semi-de-Googled without root

Device model

Samsung Galaxy S22 Ultra

Steps to reproduce

1. Add Gmail account using login method.
2. Close app.
3. Wait a week or two.
4. Receive "Authentication failed. Update your server settings." notification.

Expected behavior

The app should either remove the "Authentication failed. Update your server settings." notification when it successfully syncs mail right after sending it, or wait to send the notification until the app has confirmed that the authentication token is invalid.

Actual behavior

The app sends an "Authentication failed. Update your server settings." notification as soon as connection to the server fails, and does not remove it even when the failed connection gets resolved a couple of seconds later.

Logs

k9mail-logs.txt

Due to me having many email accounts added to Thunderbird for Android, certain parts of the log have been removed in order to help consolidate the error.

Furthermore, please reference the previously-closed issue #8023, as this seems to be related to it.

[cketti]

The app shouldn't display an authentication error notification just because the connection to the mail server fails. And from the log it looks like that's not the case.

The log shows that the connection to the IMAP server can be established, but no access token can be retrieved. It's unclear what is causing the inability to fetch the access token. The OAuth library is not returning any errors.

Can you reliably reproduce this error by waiting a certain amount of time before checking for new messages?