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Firefox browser logins and passwords gone. Syncing does not fix this.

  • 2 replies
  • 1 has this problem
  • Last reply by FredMcD

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I honestly don't know. The only thing I do know is that this problem only appeared after the option to make and sync an account was offered. I would at least like to know if there is a way to access the password to my main email as that is a business email I cannot afford to lose. At most, I would like to have all those accounts back. Also, I would like to ask that you forgive the account name, as I was very frustrated when I made it. I have a lot to lose from this.

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Is the data still on the other device that you had connected to Firefox Sync?


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Firefox 80+ has a logins-backup.json file in the profile folder that can be used in case of issues with logins.json or to undo an accidental delete of a login, so you can check if you can find this file in the profile folder or in a backup and replace the current logins.json. Make sure to keep a backup copy of all involved files (logins.json and key4.db and logins-backup.json)

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

Help -> More Troubleshooting Information -> Profile Folder/Directory: Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder

If you use a Primary Password then you can prevent losing passwords by canceling the PP prompt. You need to logout beforehand by canceling a PP prompt, e.g. by clicking the eye icon in Lockwise (about:logins).

Also see;


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