I got a Xenial 16.0.7 ISO and run it in a virtual machine. Enabled proposed and now upgrading update-manager forces the installation of a newer ubuntu-advantage-tools (from 10{something} to 33~16.04).
I confirm then that launching and finishing update-manager without internet connection produces no error any more. ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049785 Title: /usr/bin/update-manager:json.decoder.JSONDecodeError:/bin/update- manager@118:start_update:start_available:refresh_cache:_get_ua_security_status:load:loads:decode:raw_decode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/2049785/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs