Check your repo key: https://juliank.wordpress.com/2016/03/15 /clarifications-and-updates-on-apt-sha1/
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1553121 Title: Xenial preseed fails to load key for 3rd party repo with apt- setup/local0/key To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt-setup/+bug/1553121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs