A sending fails on one Outlook mail a/c - Thunderbird reinstall to give a fresh start with v. 142.0 

Hello, A sending fails on one Outlook mail a/c - Thunderbird reinstall to give a fresh start with v. 142.0 - fresh add of Outlook mail a/c with password, that is active receiving. However, yet fails to send, with a note re-enter password. However, no password entry panel is presented, only retry or cancel. To check, Outlook mail login passes with recorded password and is simultaneously open on browser tab and mails sends from browser. To check, a googlemail added sends and different Outlook mail a/c sends, both as added with the Hub. Both Outlook mail a/c's have matching settings, each has a different password. So how to re-enter a password for Outlook mail that fails to send ? All commentary welcome. Colin DB