Perhaps your external drive doesn't support the ipc signing changes required to fix Badlock.
Could you try adding the following to your /etc/samba/smb.conf, in the [global] section, and then rebooting?: client ipc signing = disabled -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1579562 Title: Still unable to access unpassworded NTFS shares with 4.3.9 Fix To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1579562/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs