can you give more details? can you think of something you did that may have caused it to stop working?

Did you try to uncheck & then check + set another Master Password?

Yes, I unchecked the box, rebooted, changed the password, rebooted, changed the password again, rebooted. Checking and unchecking, booting and rebooting. This is the extent of my technical capabilities.

How about back up your bookmarks and reset your firefox using Firefox given method at about:support?

You are so kind. I thought of that, and I don't know how to back up my bookmarks. Is it easy?

You can access to it by pressing the key chain : Ctrl + Shift + B Choose Import and Backup -> Back up then choose a location to save your backup of the bookmark. And you can import it the same way but choose Restore. Hope this help.

It is possible that there is a problem with the logins.json and possibly the key3.db file(s) that store the passwords.

If you still have the signons.sqlite file used in previous Firefox versions then you can try to force Firefox to migrate the passwords saved in that file (you will lose passwords saved in Firefox 32+ versions). You can force Firefox to reimport the passwords from the signons.sqlite file and rebuild the logins.json file with these steps:

• reset the signon.importedFromSqlite pref on the about:config page to the default value via the right-click context menu
• delete the logins.json file in the Firefox profile folder with Firefox closed

When you restart Firefox then you should have the signon.importedFromSqlite pref with the value set to true and you should have the passwords imported in the Password Manager unless there may have been errors.

You can use this button to go to the currently used Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
• http://kb.mozillazine.org/Profile_folder_-_Firefox

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

If that didn't help then you can try to restore a previous version of the key3.db file and the logins.json or signons.sqlite file and possibly repeat the above in case of the signons.sqlite file.

If that still didn't help then remove the logins.json and signons.sqlite and key3.db files to make Firefox create new files. You will have to set the Master Password again if you delete the key3.db file as this file stores the encryption key.

• http://kb.mozillazine.org/Profile_backup
• https://support.mozilla.org/kb/Backing+up+your+information

beancounter35 said

My master password is set, and used to work, now it doesn't. How to make it work again?

how does "You can access to it by pressing the key chain : Ctrl + Shift + B Choose Import and Backup -> Back up then choose a location to save your backup of the bookmark. And you can import it the same way but choose Restore. Hope this help." fit in as a correct answer for the Master Password not working??????

I haven't changed mine either and it doesn't work....what the H....?

If you're going to jump into a 3 month old solved thread, that was marked as solved by the " owner" of the thread, at least read every posting in the thread.

11/5/14 8:07 PM the "owner" of this thread said: "You are so kind. I thought of that, and I don't know how to back up my bookmarks. Is it easy?"