Hi there, I really want to use Thunderbird as my mail client and move away from a combination of using both Outlook & Mail for windows. However, these both connect to my work account whereas Thunderbird can't or so it appears. I've downloaded the latest client and tried the automatic set up, which appears to work as it returns that my configuration is found in the Mozilla ISP db. When I try to retrieve my mail however, I get the error: 'The current operation on 'Inbox' did not succeed. The mail server for account [my email address] responded: User is authenticated but not connected'. This is then followed by: 'Server outlook.office365.com has disconnected. The server may have gone down or there may be a network problem'. I was expected problems with the auto config as when setting up Outlook, I need to add my company's server: webmail.[company name].com. Also, we use duo for 2FA so I don't know if that makes a difference. I've spoken with our internal IT and they can't get this to work either so coming here for the answer if possible. If there's any more information you need, please let me know. Cheers. Tim