I get a pop up that says “Login to server imap.comcast.net with user name actuary@comcast.net failed.” There are three buttons “Retry”. “Enter New Password” and “Cancel”. None help. Supposedly Xfinity is moving its email op to Yahoo but I want to stay with Thunderbird which I have been using for over ten years. I haven’t received email on my ThinkPad for a week but I do get it on my iPad.