Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Outlook configuration fails when setting up SMTP/Outgoing Server

  • Nema odgovora
  • 0 ima ovaj problem
Nix
Nix
more options

Attempts at configuring Outlook account via Thunderbird for Android always result in an "Authentication Error" when setting up the outgoing server.

Using default settings:

Server: smtp.office365.com Security: StartTLS Port: 587 Authentication: OAuth 2.0 Username: xxxx@outlook.com Client Cert: None

Detailed message says authentication unsuccessful, but I don't get any errors when I login for the Incoming/IMAP server connection.

Attempts at configuring Outlook account via Thunderbird for Android always result in an "Authentication Error" when setting up the outgoing server. Using default settings: Server: smtp.office365.com Security: StartTLS Port: 587 Authentication: OAuth 2.0 Username: xxxx@outlook.com Client Cert: None Detailed message says authentication unsuccessful, but I don't get any errors when I login for the Incoming/IMAP server connection.

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.