Thunderbird w/Outlook.com
Settings changes to Authentication - is it Normal password or OAuth2?
Settings changes to Authentication - is it Normal password or OAuth2?
All Replies (1)
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: