Thanks for filing this bug in Ubuntu. Could you please share your /etc/samba/smb.conf on that 17.10 server? The output of "testparm -s" would be best.
I tried the same here and could mount the share just fine from xenial. Maybe you restricted the smb protocol to higher versions? mount.cifs will use SMB1 by default, whereas windows 10 will use SMB2 or 3 (can't recall now). You can check with "smbstatus" on the server which protocol the connected client is using: root@15-89:~# smbstatus Samba version 4.5.8-Ubuntu PID Username Group Machine Protocol Version Encryption Signing ---------------------------------------------------------------------------------------------------------------------------------------- 14179 ubuntu ubuntu 10.0.5.1 (ipv4:10.0.5.1:57260) NT1 - - Service pid Machine Connected at Encryption Signing --------------------------------------------------------------------------------------------- data 14179 10.0.5.1 Tue Jul 11 12:59:32 PM 2017 UTC - - IPC$ 14179 10.0.5.1 Tue Jul 11 12:59:32 PM 2017 UTC - - No locked files To specify a different version, mount the cifs fileysystem like this: root@nsn7:~# mount //10.0.5.55/data /data -o user=ubuntu,vers=2.0 Password for ubuntu@//10.0.5.55/data: ****** root@nsn7:~# cd /data root@nsn7:/data# ls -l total 1024 -rwxr-xr-x 1 root root 38 Jul 11 09:57 welcome.txt root@nsn7:/data# cat welcome.txt Welcome to the data share, developer. root@nsn7:/data# echo bye > bye.txt root@nsn7:/data# ls -la total 2052 drwxr-xr-x 2 root root 0 Jul 11 10:02 . drwxr-xr-x 34 root root 4096 Jul 11 09:59 .. -rwxr-xr-x 1 root root 4 Jul 11 10:02 bye.txt -rwxr-xr-x 1 root root 38 Jul 11 09:57 welcome.txt And smbstatus on the server in this case (showing only the relevant line, for brevity): 14182 ubuntu ubuntu 10.0.5.1 (ipv4:10.0.5.1:57720) SMB2_02 - - In any case, I can read and write to the share. This is my smb.conf. All default except for the removal of printer shares, and the addition of the [data] share: [global] server string = %h server (Samba, Ubuntu) log file = /var/log/samba/log.%m max log size = 1000 syslog = 0 panic action = /usr/share/samba/panic-action %d usershare allow guests = Yes map to guest = Bad User obey pam restrictions = Yes pam password change = Yes passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . passwd program = /usr/bin/passwd %u server role = standalone server unix password sync = Yes dns proxy = No idmap config * : backend = tdb [data] comment = Data share path = /data read only = no browseable = true guest ok = no ** Changed in: samba (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1703490 Title: Unable to mount network volume on 17.10 Samba server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1703490/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs