Ubuntu – Empathy doesn’t connect to facebook accout

I had this problem too . It seemed to occur after an upgrade, I could add new accounts, and disable old ones, but unable to remove old accounts using the proper windows. I eventually found that account information appeared to be stored in the directory

/home/$USER/.config/libaccounts-glib/  (replace $USER with your username.) 

There where 3 files in there accounts.* ; I removed them all and rebooted the computer, and found all the online accounts where gone, I then re-created the new accounts manually as needed.

This is a bit of a heavy handed approach, so if you use it, I recommend you take a copy of the files before you remove them from that directory.

There's a bug filed for this issue: https://bugs.launchpad.net/bugs/1180297

The root cause is that Facebook redirects to an insecure HTTP page during the authentication process, and for security reasons we don't allow that. The same problem appeared in February, and then Facebook was quick to fix it in a few days. Now it seems it's taking longer, but I'm still hopeful.