revolving asking for passwords

Hello,

it seems to me, that the file there contains passwords are corrupt.

Perform an experiment, ending Thunderbird and delete the file "logins.json" in the Profile-Folder.

The way to, press Win-Key + R and fill %AppData%\Thunderbird\Profiles -> OK and go to your Profile-Folder.

After that operation, you must give password every account and mark square field to save.