Hey, out of nowhere my thunderbird started asking for all my passwords, doesn't want to save them and denies access to anything. My configuration: Thunderbird 52.4.0 (64-bit) for Linux Fedora 27 encrypted on a Thinkpad T430 3 mail accounts at different providers My problem: Everything worked just fine, until I went to make me some coffee. After I came back to my Computer and waking it up again, my still opened Thunderbird was constantly asking for my passwords and usernames. In Preferences -> Security -> Saved Passwords there is not a single saved password, although I saved my passwords when configuring Thunderbird. When I enter my password for a account and check the "remember password" box, Thunderbird promptly asks me a second time. And a third. Sometimes Thunderbird accepts my password, but doesn't show any new mails. When sending or refreshing it asks again, and again and again, but never shows any error messages. I checked my server configurations and they were just fine, as far as I could figure. I thought maybe I need to configure a Master password, but after entering it twice and clicking on OK, it says it failed. I tried the trick to delete the keys3.db file, but it didn't work. thanks for helping Rubine