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

Avatar for Username

Шукати в статтях підтримки

Остерігайтеся нападів зловмисників. Mozilla ніколи не просить вас зателефонувати, надіслати номер телефону у повідомленні або поділитися з кимось особистими даними. Будь ласка, повідомте про підозрілі дії за допомогою меню “Повідомити про зловживання”

Докладніше
Ця тема перенесена в архів. Якщо вам потрібна допомога, запитайте.
Вирішено Архівовано

Login to server outlook.office365.com with username xxxxxxxxxxxxx failed

Thunderbird Усунення проблем
sfhowes replied
lesd1
lesd1

Recently (~January 25, 2023) in Thunderbird (102.7.0) my outlook.com email (SMTP) stopped working with the error message, "Login to server outlook.office365.com with username xxxxxxxxxx failed."

  • I see some have suggested changing Authentication method to "OAuth" from "Normal Password" but this has not helped. (Not sure if OAuth is different than OAuth2, but only OAuth2 is an option in Thunderbird)
  • I have tried setting the Authentication to OAuth2 in the outlook.com account => account settings => Edit SMTP server
  • I have tried setting the Authentication to OAuth2 in the outlook.com account => Server Settings
  • In the outlook.com account => Server Settings - Connection security is set to SSL/TLS; Port is 993
  • In the outlook.com account => account settings => Edit SMTP server Connection security is set to SSL/TLS; Port is 465
Recently (~January 25, 2023) in Thunderbird (102.7.0) my outlook.com email (SMTP) stopped working with the error message, "Login to server outlook.office365.com with username xxxxxxxxxx failed." * I see some have suggested changing Authentication method to "OAuth" from "Normal Password" but this has not helped. (Not sure if OAuth is different than OAuth2, but only OAuth2 is an option in Thunderbird) * I have tried setting the Authentication to OAuth2 in the outlook.com account => account settings => Edit SMTP server * I have tried setting the Authentication to OAuth2 in the outlook.com account => Server Settings * In the outlook.com account => Server Settings - Connection security is set to SSL/TLS; Port is 993 * In the outlook.com account => account settings => Edit SMTP server Connection security is set to SSL/TLS; Port is 465
Вкладені знімки екрана

Усі відповіді (1)

sfhowes
sfhowes

Вибране рішення

The correct settings are: outlook.office365.com on 993, SSL/TLS, normal password, User Name = email address; smtp.office365.com on 587, STARTTLS, normal password, User Name = email address.

If it doesn't work with the correct settings, check if two-step verification is on the account (if so, use an app password), disable a VPN if applicable, and disable antivirus scanning of the TB profile folder (e.g. Mail Shield) and scanning of secure (SSL) connections.