Yesterday, Thunderbird, version 115.11.1 (64-bit) suddenly stopped sending and receiving all emails. I received the following error messages: 1. Login to server pop.mail.yahoo.com with username ***@att.net failed. 2. Login to server smtp.att.yahoo.com with username ***@att.net failed. I reset my password, but that did not help. I am continually prompted to reset the password. I verified that the ATT.net web account is working properly, where I can send and receive emails. I also verified that the server settings are all correct. Incoming server setting: pop.mail.yahoo.com, Port 995, Connection Security: SSL/TLS, Authentication Method: Normal Password. Outgoing server setting: smtp.att.yahoo.com, Port 465, Connection Security: SSL/TLS, Authentication Method: Normal Password. Could you help me resolve this problem. Thanks very much, Norm Franke norm.franke@att.net