Disable View/Show Password Button

Use the Config Editor to toggle the parameter shown in the attachment.

Anyone who is determined to see the passwords can reverse the preference toggle, or reset a master password. Your best option is to password-protect operating-system user accounts and lock the computer when it is unattended.

http://kb.mozillazine.org/Protect_the_profiles_contents

@stans, I have tried this earlier. Didn't work on the latest version.

@sfhowes, I am looking to deter casual curiosity.

Prefs like pref.privacy.disable_button.view_passwords only work when you lock them via an autoconfig.cfg file.

• https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig

That should work in Thunderbird as well.

// disable Saved Passwords
lockPref("pref.privacy.disable_button.view_passwords", true);

@cor-el, tried this before posting the question. Doesn't work.

@cor-el, tried this before posting the question. Doesn't work.

It works, actually. I tried it in Tbird 68.9.0 and locked proxy settings and that password button setting.