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

Avatar for Username

Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

자세히 살펴보기
이 쓰레드는 잠기고 보존되었습니다. 만약 도움이 필요하시면 새로운 질문을 올려주세요.
Solved Locked 보존

Authentican failure, ad infinatum

Thunderbird 비밀번호와 로그인
SuMo Bot replied 8개월 전
SuMo Bot
SuMo Bot

Have no idea to whom I was chatting a week or so ago, but outlook.office365.com was recommended to me as the incoming server setting for Outlook.com. Set TB that way and used it for a week or so. TODAY got a "failure to authenticate" error from TB (have had many such errors before). Went directly to Copilot, as I thought it would be the most authoritarian place to clear up Microsoft problems. It provided the informaiton below: Official Outlook.com Thunderbird Incoming Server Settings (2026) IMAP (recommended) Settings Server name: imap-mail.outlook.com Port: 993 Security: SSL/TLS Authentication; OAuth2 Username; Your full Outlook.com email address

Why this is the correct server Outlook.com, Hotmail, Live, and MSN accounts do not use outlook.office365.com .

Set outlook account incoming server to imap-mail.outlook.com and reset TB Immediately got: Mozilla Thunderbird Thunderbird Authentication failure while connecting to server imap-mail.outlook.com.

Can someone please tell what's going on?

Have no idea to whom I was chatting a week or so ago, but outlook.office365.com was recommended to me as the incoming server setting for Outlook.com. Set TB that way and used it for a week or so. TODAY got a "failure to authenticate" error from TB (have had many such errors before). Went directly to Copilot, as I thought it would be the most authoritarian place to clear up Microsoft problems. It provided the informaiton below: Official Outlook.com Thunderbird Incoming '''Server Settings (2026)''' IMAP (recommended) Settings Server name: imap-mail.outlook.com Port: 993 Security: SSL/TLS Authentication; OAuth2 Username; Your full Outlook.com email address Why this is the correct server Outlook.com, Hotmail, Live, and MSN accounts do not use outlook.office365.com . Set outlook account incoming server to imap-mail.outlook.com and reset TB Immediately got: Mozilla Thunderbird Thunderbird Authentication failure while connecting to server imap-mail.outlook.com. Can someone please tell what's going on?

모든 댓글 (2)

Wayne Mery
Wayne Mery
  • 검토자
  • 상위 10 공헌자

선택된 해결법

Possibly due to service outage https://downdetector.com/status/outlook/

SuMo Bot
SuMo Bot 질문자

Evidently, there IS an Outlook.com outage 11:00a to present. Thanks

SuMo Bot
SuMo Bot 질문자

This question has been locked because the original author has deleted their account. While you can no longer post new replies, the existing content remains available for reference.