Is there a key3.db file in the same location? Both are required.

Are you using any password add-ons?

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Thank for your time, FredMcD!

I can see key3.db file in the same location of 17MB in size. I am not using any password add-ons, now or before upgrade. I tried starting Firefox in Safe mode, but it is not solving the problem reported.

Thank you!

Look on your desktop. Do you see a folder called; Old Firefox?

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

Type about:profiles<enter> in the address bar. How many profiles are listed? How many should be there?

Try to rename/remove the secmode.db file 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:profiles page.

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

You can check in Windows Explorer if there is a previous version of the logins.json and key3.db file available.

• right-click: Properties -> Previous Versions
• https://support.microsoft.com/en-us/search?query=previous-versions-of-files
• https://support.microsoft.com/en-us/help/17119/windows-7-recover-lost-delete-files

Hi FredMcD,

The "Old Firefox" folder on my desktop was deleted accidentally and could not be recovered!

I do see only one profile "Profile: default" when I Type about:profiles<enter> in the address bar. In the past too, I do not have multiple profiles in Firefox.

Thanks, -Anthony

Hi cor-el,

Thank you for sparing your time!

I renamed the secmode.db file in the Firefox profile folder while Firefox closed and restarted normally. When I restarted, Firefox was not showing the saved passwords.

I could not get any previous versions either for logins.json, but or key3.db file.

Thanks

Hi everyone,

Last week, I uninstalled Firefox completely, restarted the computer and installed again 56.0.2 (64-bit) version. After first start, it prompted me to Reset everything and opted for that. It took nearly 12 minutes, but after that now Firefox asks to remember passwords (which it was not doing previously) and shows my previous saved logins.

Thanks, -Anthony

That was very good work. Well done.