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.

Avatar for Username

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

Cannot add email account to Thunderbird

  • 1 reply
  • 0 have this problem
  • Last reply by david

rcglfr1011
rcglfr1011
more options

For years I have had my Outlook account connected to Thunderbird. A few weeks ago I stopped getting my emails for the account with Thunderbird message saying it could not connect to the Outlook server. Nothing had changed and my sign in and password were correct. I decided to delete the Outlook email from TB and try to re-install it. Now I keep getting the error message that I have attached. I have no idea how to proceed.

For years I have had my Outlook account connected to Thunderbird. A few weeks ago I stopped getting my emails for the account with Thunderbird message saying it could not connect to the Outlook server. Nothing had changed and my sign in and password were correct. I decided to delete the Outlook email from TB and try to re-install it. Now I keep getting the error message that I have attached. I have no idea how to proceed.
Attached screenshots

All Replies (1)

david
david
  • Top 10 Contributor
more options

MS sent messages to users about server changes. Try these: - incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 (assuming IMAP) - outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2

Helpful?

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.