Are you using a master password or use Sync?

• https://support.mozilla.org/en-US/kb/use-master-password-protect-stored-logins

Try to rename/remove logins.json and key4.db and, if present, delete key3.db in the Firefox profile folder with Firefox closed.

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

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

NO master password or Sync in use, so I assume that the script provided is not applicable to me. Correct?

This is a Mac. And I'm quite literate but not highly technical so more detail is most helpful.

Thanks!

You can still try to reset the files that are used for storing the passwords like I posted above. The question I asked above is merely to ensure whether you were using these feature because they can affect issues with the passwords.

Did you ever used the Password Manager to store passwords in Firefox?

Did you ever use or are you sharing the same profile folder with other Firefox releases since you appear to be using a beta version?

It worked!!! Yippee!

I found the hidden library, renamed the JSON script and key4, and deleted the key3.

It now saves passwords perfectly. I'm not aware of my beta version status, but please let me know if I should be on a production version and how to get there.

Many thanks!!!

You're welcome

You are currently on the beta update channel as you can see on the "Troubleshooting Information" (about:support) page and via "Firefox -> About Firefox". The beta update channel receives update twice a week.

You can find the full version of the current Firefox release (66.0.3) in all languages and all operating systems here:

• https://www.mozilla.org/en-US/firefox/all/
• https://www.mozilla.org/en-US/firefox/66.0.3/releasenotes/