This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

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

Unable to login at server probably wrong configuration or username or password

  • 4 ردود
  • 1 has this problem
  • 1 view
  • آخر ردّ كتبه Wayne Mery

more options

Hello , I am trying to add a office365 account in thunderbird to a new win10 machine with below

IMAP : outlook.office365.com Connection:SSL/TLS Port:993 Authentication : OAuth2

SMTP smtp.office365.com port:587 Connection:STARTLS Authentication:Outh2

This is returning the error

Unable to login at server probably wrong configuration or username or password

Hello , I am trying to add a office365 account in thunderbird to a new win10 machine with below IMAP : outlook.office365.com Connection:SSL/TLS Port:993 Authentication : OAuth2 SMTP smtp.office365.com port:587 Connection:STARTLS Authentication:Outh2 This is returning the error Unable to login at server probably wrong configuration or username or password

All Replies (4)

more options

What version of Thunderbird?

more options

The latest one from the site

more options

Matt said

What version of Thunderbird?

The latest one from the site

more options

d.is.the said

The latest one from the site

The number from Help > Troubleshoot Info is best.