![Thunderbird logo](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/products/2024-02-12-07-36-53-599028_1.png)
suddenly said 'login to server with user name failed
unable to login
All Replies (1)
Hi, you will need to provide more information in order for people to help you. Thank you.
Version information for Thunderbird, platform you are working on ie. Windows 11 POP/IMAP server & SMTP server settings with the username/password starred out eg. ****** Is there a full error message ? if so, what is it ?
Server Type : POP Mail Server Server Name : outlook.office365.com Port : 995 Username : ********** Connection Security : SSL/TLS Authentication Method : OAuth2
You will find this in Settings->Account Settings->Server Settings (in the left hand window, under your email account name)