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It appears that the post-install failed to start the SSH server. The latest version of SSH came only with 4 security fixes so it is not obvious what would be causing this: http://changelogs.ubuntu.com/changelogs/pool/main/o/openssh/openssh_7.2p2-4ubuntu2.4/changelog Can you verify your sshd config is valid by running `sudo /usr/sbin/sshd -t && echo PASS || echo FAIL` can you also try manually starting the ssh server via `sudo systemctl restart ssh.service` and see if any error message appear in `sudo systemctl status ssh.service`? ** Changed in: openssh (Ubuntu) Status: New => Incomplete ** Changed in: openssh (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1745027 Title: package openssh-server 1:7.2p2-4ubuntu2.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1745027/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs