I used Wireshark to find out which website was connected during authentication, it was Google. I have 2-factor authentication turned on, so my "normal" Google password wasn't accepted by the dialog. I generated a new account specific password, which was accepted.
I used Wireshark to find out which website was connected during authentication, it was Google. I have 2-factor authentication turned on, so my "normal" Google password wasn't accepted by the dialog. I generated a new account specific password, which was accepted.
Hope this helps others...