There might be times when you have lost or forgotten the Master Password of Mozilla Thunderbird. Just like this happened with me when I upgraded my email client to latest version Thunderbird 3. After upgrading the client started asking me for Master Password which I didn’t remember, I tried some of my common password but it didn’t work so I searched for solution for it.
There are two ways you can reset or change your master password :-
If you remember your password your previous Thunderbird 3 password you can change by going to
“Tools -> Options -> Security -> Change Master Password “.
Second is if you have lost or forgotten your password even then you can reset it but Do take a note that by doing so all the saved Email Account passwords, personal certificates and private keys shall also be deleted.
For resetting lost or forgotten password in Thunderbird 3 Choose Tools – Error Console, paste the expression: