Facing the same problem on a fresh 16.10 installation, experienced it first while trying to install VLC through software centre. Ubuntu SSO GUI didn't log me in, I tried a workaround using Terminal:
~$ sudo snap login <email> [sudo] password for abhishek: Password: Login successful abhishek@kabhishek:~/Documents$ sudo apt-get install vlc Only the GUI SSO option doesn't authenticate. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1616943 Title: Can't auth against U1 in g-s To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1616943/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs