- Solved
Login to server outlook.office365.com with username xxxxxxxxxxxxx failed
Recently (~January 25, 2023) in Thunderbird (102.7.0) my outlook.com email (SMTP) stopped working with the error message, "Login to server outlook.office365.com with user… (read more)
Recently (~January 25, 2023) in Thunderbird (102.7.0) my outlook.com email (SMTP) stopped working with the error message, "Login to server outlook.office365.com with username xxxxxxxxxx failed."
- I see some have suggested changing Authentication method to "OAuth" from "Normal Password" but this has not helped. (Not sure if OAuth is different than OAuth2, but only OAuth2 is an option in Thunderbird)
- I have tried setting the Authentication to OAuth2 in the outlook.com account => account settings => Edit SMTP server
- I have tried setting the Authentication to OAuth2 in the outlook.com account => Server Settings
- In the outlook.com account => Server Settings - Connection security is set to SSL/TLS; Port is 993
- In the outlook.com account => account settings => Edit SMTP server Connection security is set to SSL/TLS; Port is 465