I am running Thunderbird 102.11.0 ((64-bit) on Linux Mint 21.1 Whenever I try to add a new email account, I receive the message above. I've tried both Microsoft (live and outlook) accounts, as well as Google (Gmail) accounts, I've verified my credentials by logging-in to my emails manually; they just won't work in Thunderbird! I've also verified the Thunderbird IMAP/SMTP settings, but I still receive the Subject Line message! I had numerous accounts set-up, and they all stopped receiving email around June 2, 2023. I thought if I'd delete and re-create them, it might work, but, NO SUCCESS! I cannot send messages, either! What am I missing??? Any help would be greatly appreciated!!! Thank you!!!