Losing Mozilla Firefox add-on data for FireFTP after upgrade

Posted By on December 28, 2015

After making the Microsoft update from Windows 7 to Windows 10, there header-firefox.98d0a02c957fwere a few items lost in the mostly automatic update (BTW, it is as painless an upgrade Microsoft has ever done). One of the add-ons for the Mozilla’s Firefox browser that I find hard to live without is FireFTP (simple FTP client). Much of the FTP an sFTP management that I do has been with this and so I’ve accumulated a few “saved” log-ins and profiles. Unfortunately it broke and all the login data was missing?

Here’s what you do if this happens:

Note on the Windows 10 desktop there is a folder called “Old Firefox Data.”  Inside there is the normal looking “dot” default profile directory – normal if you ever had to access it in the past. After opening this folder you will be looking for three files: fireFTPprograms.dat, fireFTPsites.dat and key3.db. Don’t lose these, but “copy” them to the desktop while you navigate or open a new folder window containing the currently functioning Firefox install. You will find it by drilling down to something like:
(notice the items in the quotes will be unique to your Windows install)

(click for larger illustration)

After REPLACING the current Windows 10 data with the “Old Firefox Data” … be sure to close and reload Firefox. The new FireFTP add-on should now have all the FTP data that was in the previous install.

*NOTE: When you replace the Windows 10 FireFTP data with the old, you will lose whatever you may have started to use … so save any new FTP data.


  • Pat

    Are you still using Firefox? I’ve been married to Chrome since the Google Chromebook and Android phone. All browsers seem about the same nowdays.

Desultory - des-uhl-tawr-ee, -tohr-ee

  1. lacking in consistency, constancy, or visible order, disconnected; fitful: desultory conversation.
  2. digressing from or unconnected with the main subject; random: a desultory remark.