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

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

Adding email accounts failing on new PC

ju.col

I have a new PC. I have added five email accounts, three different hosts, with some difficulty. Thunderbird finds the details for others but then refuses with the message Authentication error. Unable to log in at server. Probably wrong configuration, username or password.

I added Thunderbird by copying from my old PC. The hosts for those not yet added are the same as those added.

I have a new PC. I have added five email accounts, three different hosts, with some difficulty. Thunderbird finds the details for others but then refuses with the message Authentication error. Unable to log in at server. Probably wrong configuration, username or password. I added Thunderbird by copying from my old PC. The hosts for those not yet added are the same as those added.

All Replies (1)

If the accounts on new PC are the same as on old PC, it is simpler to just copy the profile. See this: https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer

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.