I tried to ask this question a few days ago, but I see when I go to the forum that most of my question is missing, so I am posting it here again, with any luck in full: I downloaded Thunderbird to my new laptop. In the setup it asked me to enter a primary password I used the same primary password I was using on the machine from which I wanted to transfer. I copied the old Thunderbird folder into my new machine at the designated location (.../roaming) in order to keep transfer all my old info, and all the folders etc from my old machine transferred correctly. When I download or send a message, I get the usual prompt for a password to the sbcglobal account I am accessing. And it works fine. But I would like to store the password so I don't have to type it in each time, so I check the box to store it using a primary password. The primary password dialog offers to let me "change", but not to enter a new password (the top box is greyed out, implying that it accepted a primary password during setup). I type in the same primary password I used in setup and in my old machine, but it just tells me the password can't be changed. The only thing I can think of is that I mistyped the primary password during setup. There is no Show Password option to check this. How do I either reset the primary password or get it to recognize the one I've already put in? I tried using the procedure under the following link, but it didn't work (perhaps only for older versions of Thunderbird?) : https://support.mozilla.org/en-US/kb/protect-your-thunderbird-passwords-master-password Help much appreciated.