I am seeing this issue as well. I have two networks that are both configured to join a VPN, and when both networks (wifi and wired) are activated simultaneously, I see a message:
Aug 21 15:45:58 example NetworkManager[1196]: <warn> [1534823158.7630] policy: secondary connection 'Example (12345678-1234-1234-1234-1234567890ab)' auto-activation failed: (6) Connection 'Example' is already active So - the fix for me is to disable (manually, currently) the wifi when my laptop is docked; this seems to allow the VPN to connect on the (sole remaining) network connection. Posting in the hope this might help others, and to follow along with this issue :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767322 Title: "Activation of network connection failed" popup shows incessantly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1767322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs