Hello gchdevon,

Would you please take a look at this :

https://www.ghacks.net/2019/06/14/if-you-lost-all-passwords-in-firefox-read-this/

And this is the add-on that is mentioned :

https://addons.mozilla.org/en-US/firefox/addon/restore-logins/

Also see :

https://www.reddit.com/r/firefox/comments/c0fq5u/if_you_lost_all_passwords_in_firefox_read_this/

Personal note :

You're best off with just using Windows built-in Defender and maybe let malwarebytes run a scan once a month.

Also see :

https://www.howtogeek.com/239950/dont-use-your-antivirus-browser-extensions-they-can-actually-make-you-less-safe/

And :

http://tech.firstpost.com/news-analysis/ex-mozilla-firefox-developer-says-anti-virus-software-does-more-harm-than-good-359798.html

In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.

FredMcD said

written down.

In my opinion the best way ! It's safe and easy to access. I always use good ol' fashioned pen and paper ......

Well triedall the fixes suggested. The Firefox extention says "no back up detected uninstalling extension". Logins.json file does not indicate it is corrupt. Have not rolled back to an earlier version, will try and persevere with firefox as is and enter logins from notes, which may be safer anyway.

If you lost personal data then it is possible that a new default-release profile folder has been created. See "Determine if Firefox has created a new profile":

• https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks

You can open the about:profiles page via the location bar to check whether multiple profiles are present and what profile Firefox currently is using.

• Do NOT click any Remove button on this page.
• https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

Firefox 67 and later can use a dedicated profile for each of the Firefox update channels and will lock the profile, so it can only be used by Firefox in a specific installation folder. For Release versions this profile would be a xxxxxxxx.default-release profile, profiles used in older Firefox versions usually used a xxxxxxxx.default profile (a refresh adds a time stamp).

• https://support.mozilla.org/en-US/kb/dedicated-profiles-firefox-installation

Thank you for your help. Unfortunately the profile manager only lists 1 - default, profile.