@Colin sorry for the confusion. Indeed I (also) have the following packages installed: i network-manager-openvpn i network-manager-openvpn-gnome i network-manager-pptp i network-manager-pptp-gnome The system that works as expected is the clean 18.04, the old installation no longer exists.
Hence, your suggestion may be correct that the upgrade breaks things, although "Lilleman" above states that his is a clean install of 18.04. Can other people affected by this bug perhaps check for the packages above? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1725779 Title: Gnome network manager cannot find authentication binary To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-pptp/+bug/1725779/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs