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missing credentials

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mark.phillips
mark.phillips
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I had to restart my computer after upgrading ESET AntiVirus and I now have no saved passwords in FireFox.

I have located the logins.json file which is inside my current profile and can open it with FireFox. It contains over 100 records but the username/password fields are encrypted.

I understand that the logins.json file works with a file called key*.db to unencrypt the information. I can see key4.db and key3.db inside my FireFox profile folder but I'm not sure why it's not working.

Can anyone offer any advice on how I can get my passwords back?

I had to restart my computer after upgrading ESET AntiVirus and I now have no saved passwords in FireFox. I have located the logins.json file which is inside my current profile and can open it with FireFox. It contains over 100 records but the username/password fields are encrypted. I understand that the logins.json file works with a file called key*.db to unencrypt the information. I can see key4.db and key3.db inside my FireFox profile folder but I'm not sure why it's not working. Can anyone offer any advice on how I can get my passwords back?

Solution eye eponami

There are 171 logins in the file, but Firefox isn't able to decrypt any ('Couldn't decrypt string'), so it looks that there is a problem with the key file.

You can give it a some tries and check if you can locate older matching copies of logins.json and key4.db.

You can look at a utility to browse System Restore points.

To be able to use key3.db you would have to install a Firefox 68 ESR version (support for key3.db ended in Firefox 73+).

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All Replies (3)

cor-el
cor-el
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  • Top 10 Contributor
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Try to set signon.debug = true on the about:config page and check the Browser Console when you start Firefox.

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

EDIT: Do not forget to reset signon.debug to false when you are done testing.

Ezalaki modifié na cor-el

mark.phillips
mark.phillips Nkolo motuna
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Thank you for your reply.

I have adjusted the signon.debug to true, closed FireFox, copied the logins.json and all key*.db files into my profile. Then opened FireFox. Here is an export of the Browser Console - Log

I've completed the above on a test PC if that helps at all.

cor-el
cor-el
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  • Top 10 Contributor
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Solution eye oponami

There are 171 logins in the file, but Firefox isn't able to decrypt any ('Couldn't decrypt string'), so it looks that there is a problem with the key file.

You can give it a some tries and check if you can locate older matching copies of logins.json and key4.db.

You can look at a utility to browse System Restore points.

To be able to use key3.db you would have to install a Firefox 68 ESR version (support for key3.db ended in Firefox 73+).