Saved passwords all missing!!
How do I retrieve my saved passwords?
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 https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data
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).
If you use the Time Machine or other backup then try to restore logins.json and key4.db files from this backup.
Location used for the main profile that keeps your personal data (Root Directory on about:profiles).
- ~/Library/Application Support/Firefox/Profiles/<profile>
In Mac OS X v10.7 and later, the "~/Library" folder in the Home directory is a hidden folder.