I have checked the knowledge base about Thunderbird not saving passwords,but do not see a clear answer. I recently had to re-install Thunderbird in Win 10 laptop and now there is never any saved password and like others I have to continually enter it but it never shows up in the password manager -it is empty. I used an old default profile from the laptop that died which had no problems with passwords or email,but since using that profile ,(which is over 6 months old and was all I had), on a new download and install I have the password issue,so how do I use a profile to reinstall,get my password saved but not loose any more stored emails?