Hello there! It sounds like you were using an extension (that may have become outdated with the new update) or a system setting to unlock Firefox before fully opening and this may have been changed with the latest update. Some add-ons that may have become obsolete now are: * https://addons.mozilla.org/en-US/firefox/addon/master-password/ * https://addons.mozilla.org/en-US/firefox/addon/startupmaster/ If you were using any of these (or something similar), they will no longer work with Firefox Quantum. Please wait until the developers come up with updated versions (or a new extension). As an aside, the only "unlock" password I know of for Firefox is the Master Password: https://support.mozilla.org/en-US/kb/use-master-password-protect-stored-logins I hope this helps. Thank you for using Firefox!