Please provide screenshots of the errors you are getting. Is this an IMAP or POP account? Are you running Thunderbird on a computer, Mobile, Tablet or something else (please specify)? Which version of Thunderbird are you using? Which Operating System are you using?

Posted elsewhere by originator - no error messages; imap; version 128.6.1 esr (32bit); computer; windows 11 https://support.mozilla.org/en-US/questions/1489812#answer-1708067

no error message; imap; version 128.6.1 esr(32bit); computer; windows 11

If there are no error messages, how do you know that TB is attempting to retrieve email and failing? Or how do you know that Thunderbird isn't trying? Are you using the manual download button? Have you set Thunderbird to automatically download mail?

when in outlook I can send msg to another account and receive msg from another account. However in thunderbird it does nothing. so I must have that account set up wrong.

So, are you using the 'Send' button on the Email Composition? What happens when you click on it? When you click on the Receive emails icon, what happens?

i use the send button but there is no indication of anything sent or received in the other account. There is no receive button in thunderbird.