I have used Thunderbird for many, many years. Recently I cannot send emails using my hotmail accounts through live.com. I am still on Windows 10 and up-to-date on Thunderbird 91. The error message is: The message could not be sent because connecting to Outgoing server (SMTP) smtp.live.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. I have gone through the Help section and tried diasbling my Firewall and adding Thunderbird to the list of approved apps and nothing has worked. Attached is an image of the smtp settings, which are those recommended by Microsoft for hotmail accounts. Any suggestions, please? Many thanks! Peter