All, The samba, smbclient, libwbclient from 4.7.6 to 4.8 breaks role=standalone breaks the standalone file-server and cifs mounts. Gone with 4.8 are the nmbd.service and smbd.service. Standalone servers should use windbind.service for file sharing and cifs mounts -- but it does not work. After tonight's update to 4.8.0 all cifs mounts were left unreachable. This after disabling nmbd and smbd, enabling winbind and starting windbind (which started fine) all cifs-mounts to phx (my Arch server) were broken and completely inaccessible triggering a weird "Host is down" message simply trying to `ls -al` the /mnt directory, e.g.: $ l /mnt ls: cannot access /mnt/phx: Host is down ls: cannot access /mnt/phx-david: Host is down ls: cannot access /mnt/phx-cfg: Host is down total 41 drwxr-xr-x 14 root root 4096 Oct 25 13:13 . drwxr-xr-x 21 root root 4096 Sep 4 2012 .. drwxr-xr-x 2 root root 4096 Oct 25 13:13 af drwxr-xr-x 2 root root 4096 Nov 17 2010 nm drwxr-xr-x 2 root root 4096 Nov 17 2010 nm-cfg drwxr-xr-x 2 root root 4096 Nov 17 2010 nm-david d????????? ? ? ? ? ? phx d????????? ? ? ? ? ? phx-cfg d????????? ? ? ? ? ? phx-david drwxr-xr-x 23 root root 568 Jan 22 2008 pv drwxr-xr-x 2 root root 4096 Mar 14 2016 sdd drwxr-xr-x 2 root root 4096 Nov 17 2010 usb drwxr-xr-x 2 root root 4096 Apr 13 2016 usb2 drwxr-xr-x 2 root root 4096 Mar 3 2011 win Downgrading to 4.7.6 restore full functionality. Apparently there are problems with the 4.8 rollout on samba@lists.samba.org. If you have a production box serving files in standalone mode -- double check your access after update. -- David C. Rankin, J.D.,P.E.