Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Open

cannot connect to btinternet.com server for Thunderbird email

Thunderbird Reset passwords
Ed replied
cmby2
cmby2

'Login to server mail.btinternet.com with username cmby2@btinternet.com failed.' This dialog box appears when Thunderbird is opened, we cannot remember our password as it has not been required before, can you help with this please? P We are tech dummies...

'Login to server mail.btinternet.com with username cmby2@btinternet.com failed.' This dialog box appears when Thunderbird is opened, we cannot remember our password as it has not been required before, can you help with this please? P We are tech dummies...

Modified by Wayne Mery

All Replies (1)

Ed
Ed
  • Top 25 Contributor
  • Moderator

Try this:

- go to TB menu > Settings > General

- scroll all the way down and click the 'Config editor' button on the right

- click 'Accept the risk and continue' if that appears

- search for mailnews.oauth.usePrivateBrowser > change the value to true

- restart TB

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.