Image didn't upload initially so attached here...

fyi : if for any reason you loose your password or Firefox get's corrupted and can not log in or ... need to reset : you will loose all your passwords due to the security that you have put in place.

Create a new profile as a test to check if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Please let us know if this solved your issue or if need further assistance.

If not at Firefox version 52.9.0esr please switch over to it. Actually that will be updated in 2 days so please switch to 60.1.0esr for security :

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

Always :

• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Try to remove secmode.db in the profile folder. If that still doesn't work then remove logins.json and key4.db and key3.db when present in the 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