

It sounds like possibly you don't have the package cifs-utils installed on the clients. Mounting in this direction (Ubuntu client, OSX server) appears uncommon and so I would appreciate any help, advice or even thoughts people might be willing to share. I am not officially in a position to make changes to the server directly but can request specific things be done. I have very little access to the OSX server and do not know the details of the upgrade (imperfect world I know). Smb:wins server:_array_index:0 = _empty_dictionary The OSX sudo serveradmin settings smb output is as follows. I have tried various sec= additions to fstab but to no avail. Which suggests issues with ntlmssp authentication. SPNEGO(ntlmssp) login failed: NT code 0x80090302 NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY Running smbclient gives the following: ntlmssp_handle_neg_flags: Got challenge flags - possible downgradeĭetected! missing_flags - NT code 0x80090302 The linux client is able to mount SMB shares from other Ubuntu servers.

Other Mac clients ARE able to mount the shares. I also cannot mount the shares from Nautilus. Refer to the mount.cifs(8) manual page (e.g. However, after the upgrade I get the follow messages: mount error(11): Resource temporarily unavailable

Prior to the upgrade I was able to mount these directories without a problem using fstab entries like this: //Server/Share /mnt/server/share cifs user=,nounix,noauto,rw,uid=,gid= 0 0 I'm trying to mount shares from our OSX server (10.11.5) onto my linux client (Ubuntu 15.10) after an upgrade to the server took place.
