I had similar issue, as described here: https://answers.launchpad.net/ubuntu/+source/sssd/+question/665654
In my case, the locale was "LC_ALL = (unset)" and when I did $ update- locale LC_ALL="en_GB.UTF-8" and on the next login on the server I was able to ssh from it -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1675118 Title: Setting locale breaks sss_ssh_authorizedkeys: set_locale() failed (5): Input/output error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sssd/+bug/1675118/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs