Thunderbird Community Forum

I have Thunderbird 128.2.3 (32 bit). I have set Server type IMAP mail server, then Server Name to: outlook.office365.com and Outgoing Server: smtp.office365.com I have OAuth2 on both. When I enter, I get a new Thunderbird input that requires a password. My password does not work, the therefore my email account does not work.

I have confirmed that my Outlook Password is correct. I have cancelled my Outlook passwords. I have installed the 2 step verification option.

What needs to be done so I can use Thunderbird on my PC Win 10? Thank you, Ed

I have not been able to get Thunderbird to work with my outlook.com email address since MS requires 2FA, for me about 3 days ago. My server configuration is :

W10/32 bit fully patched Thunderbird 128.2.3esr (32 bit) POP Mail Server outlook.office.365.com, port 995 my MS "user name" which is my email xxxx.outlook.com SSl/TLS OAuth2

       In SMTP Server 

outlook.office365.com 465 SSL/TLS OAuth2 xxxx@outlook.com

The error message I get with this config says "Thunderbird could not connect to server outlook.office365.com; the connection was refused".

I DO NOT have an office365 account.

Logging to www.outlook.com with my UN (=outlook.com email address) and password WORKD. Although the lack of a way to turn off the MS spam filtering makes it useless. I have put some MS thing on my phone and I have to do some 2FA thing when bringing up www.outlook.com.

Help please.

I use SMTP settings

Description: smtp.office365.com Server Name: smtp.office365.com Port: 587 User Name: mypersonalaccout@hotmail.com Authentication method: OAuth2 Connection Security: STARTTLS

but TB is incapable of sending email. Either I got dialog https://software9119.technology/__other/tb/dialog.png or error https://software9119.technology/__other/tb/timed-out.png.

I tried cleaning cache and made some re+/search with no avail. There seems to exist some Authenticated SMTP but this is only available on Exchange 365 while this is my personal Outlook.com account.

Same question had Bill Swartout at 1/9/24, 2:30 PM with no answer, https://support.mozilla.org/en-US/questions/1423404#answer-1629472.

400. That’s an error.

The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

I keep getting this pop up message when I click on my inbox folder. I have two other email accounts, and they are working. I have compared the settings for the account that is not working, with the accounts that are working, and they are the same. The account that is not working is my main concern. Sure would like to get it working again. Any suggestions? Thank you if you can help!

Thunderbird keeps asking me for the password of an email account every time I restart it. The account was removed from Thunderbird several months ago. Even when the account is set up again, it asks for the password in a continuous loop. The email account itself cannot be deleted or the password changed as it is used by multiple parties.

I have tried sevaral things and it seriously is driving me crazy...