Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, 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

After last update can't get to my mailbox

  • 1 reply
  • 0 have this problem
  • 1 view
  • Last reply by christ1

more options

My Thunderbird has updated and it's three days now I see the message, that logging in to server pop3.poczta.onet.pl has failed. The server responded with: "[AUTH] Authentication failed". No difficulties with getting to my mail on the website though. I tried some things you suggest (eg changing tls) but it didn't help. What can I do? Can I return to the Thunderbird version from before the last update?

My Thunderbird has updated and it's three days now I see the message, that logging in to server pop3.poczta.onet.pl has failed. The server responded with: "[AUTH] Authentication failed". No difficulties with getting to my mail on the website though. I tried some things you suggest (eg changing tls) but it didn't help. What can I do? Can I return to the Thunderbird version from before the last update?

All Replies (1)

more options
I tried some things you suggest (eg changing tls)

Do not mess with TLS settings, unless you know exactly what you're doing.

Please post your Troubleshooting Information. At the top right of the Thunderbird window, click the menu button ≡, then select Help > More Troubleshooting Information. Press the "Copy text to clipboard button" and paste the information into your reply.