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

Thunderbird w/Outlook.com

  • 1 reply
  • 0 have this problem
  • 107 views
  • Last reply by sfhowes

more options

Settings changes to Authentication - is it Normal password or OAuth2?

Settings changes to Authentication - is it Normal password or OAuth2?

All Replies (1)

more options

Use OAuth2 for the incoming outlook.office365.com, 993, SSL/TLS, and outgoing smtp.office365.com, 587, STARTTLS. But if you're using TB 115 with an older profile, you might have to remove some entries from Config. editor in Settings/General:

https://bugzilla.mozilla.org/show_bug.cgi?id=1814823#c0