empathy google talk

edit

There are two ways.

1, Use GNOME online accounts and add Google account. In this method you have to sign in to google account and you have to authorize GNOME to access your account.

2, Simply add account in empathy. Here do NOT use your regular google password. You have to set up a app specific password to use in empathy.

If you use google password on empathy, google may block the login.

Maybe you have to enable "Access for less secure apps". I have no clue what that does but I had to do it in order to access my googlemail using imap. Google describes it here. Settings can be changed here

How are you trying to set up the google account in empathy? Are you using gnome-online accounts or are you trying to set up a separate account? If you're trying to set up a separate account without gnome-online accounts you may have to set up app specific passwords in your google accounts as detailed here: https://support.google.com/accounts/answer/185833?hl=en

Same here. I set up the Online Accounts on Fedora Workstation 21.