issues with samba

[Stephen Musa HONLUE]

Hello out there,
i am working on a file server for 4 days today but it is not working as requested.
in fact i want windows workstations to connect and manipulate documents on the server, for this, i have installed ubuntu 14.04 with samba4 and created a homes share on the server but, only the ubuntu main account is able to connect the orther accounts are unable. here follows my smb.conf file

[global]
        panic action = /usr/share/samba/panic-action %d
        wins support = yes
        netbios name = svr
        passwd program = /usr/bin/passwd %u
        name resolve order = bcast lmhosts host wins
        workgroup = WORKGROUP
        passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:                                                                                                                     * %n$
        map to guest = bad user
        preferred master = yes
        pam password change = yes
        server string = Serveur de FICHIER
        max log size = 1000
        security = user
        os level = 255
        unix password sync = yes
        dns proxy = no
        encrypt passwords = true
        local master = yes
        winbind trusted domains only = yes
        socket options = TCP_NODELAY
        domain master = yes
        force group = staff
        usershare allow guests = yes
        passdb backend = tdbsam
        path = /home
        syslog = 0
        read raw = no
        write raw = no
        obey pam restrictions = yes
        winbind use default domain = yes
        writeable = yes
        log file = /var/log/samba/log.%m
        ntlm auth = no
        lanman auth = no
        client ntlmv2 auth = yes
[homes]
        browseable = no
        writeable = yes
        create mode = 770
        directory mode = 770

i have created accounts using 
useraad and smbpasswd -d 


kindly assist if you have an idea

-----------
M. Musa Stephen HONLUE, 
@BrightMind
CISCO Instructor (ITE 5.0, CCNA R and S, CCNA Security)
LPIC-1, SUSE CLA, CCNA, CCNA Sec, CCNP, HCNA, HCNA Sec, HCNP, Centreon
Tel (237) 99 49 12 32
--------------------------------------------
La réussite ne s'improvise pas!!!
The Future is Mine
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