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Firefox master password doesn't work anymore...

I have set a master password for Firefox on my mac (FF4, OS X 10.6). This has worked for years, but suddenly today I cannot unlock it anymore. I've had this a while back on a Ubuntu Desktop, and solved it back then by replacing the profile with a backup. I've tried to do this today, multiple times, with backups from timemachine. I restored the files in my user library, Application Support, the folders Mozilla and Firefox. I used a backup from several days ago, when the master password could be unlocked. I am absolutely sure that I use the correct password. But it doesn't work for some reason. I have disabled all add-ons, but no luck.

Do you have any ideas how to get this solved? Is this a common problem?
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R7AF
Asked:
R7AF
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1 Solution
 
Bryan_VinesCommented:
R7AF,

Try this link to Mozilla's site: Forgot my master password. That may do the trick.

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Bryan Vines
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Sudeep SharmaTechnical DesignerCommented:
The above link would reset your master password and will remove all of your saved usernames and passwords.

I would recommend using addon Password exporter to export the username and password in the XMLfile and then resetting the Master Password
https://addons.mozilla.org/en-US/firefox/addon/2848

I hope that would help

Sudeep
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R7AFAuthor Commented:
You suggest to delete the entire password database, as without master password, it cannot be restored. However, what I want to know is why restoring the old backup-profiles doesn't work. For now I work without any saved passwords.
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Sudeep SharmaTechnical DesignerCommented:
@R7AF

Did you read my comments above about the Password Exporter addon for Firefox? (ID: 35429201
)
I would recommend using addon Password exporter to export the username and password in the XMLfile and then resetting the Master Password

Password exporter
https://addons.mozilla.org/en-US/firefox/addon/password-exporter/

Sudeep
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Bryan_VinesCommented:
R7AF, try this:

Quit Firefox (Click Firefox menu, then click Quit Firefox).
Restore these files from your good backup to your Firefox profile folder (the one with the random characters for a name):
  - key3.db
  - signons.sqlite

Then launch Firefox again to see if your Master Password works.

Please let me know if that helps.
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Bryan Vines
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