Hello, this is a openSUSE 13.1, installed originally with samba 4.1.19 This is a simple workgroup setup. smb.conf as follows: [global] security = USER server string = Samba Server workgroup = WORKGROUP os level = 66 guest ok = no null passwords = yes unix password sync = yes passwd program = /usr/bin/passwd %u passdb expand explicit = no passdb backend = tdbsam lanman auth = yes client lanman auth = yes client plaintext auth = yes smb encrypt = no interfaces = eth* lo bind interfaces only = yes socket options = SO_KEEPALIVE TCP_NODELAY smb ports = 139 unix extensions = no host msdfs = no log level = 2 log file = /var/log/samba/samba.log.%U time server = yes local master = yes domain master = yes preferred master = yes wins support = yes name resolve order = wins lmhosts host bcast dns proxy = no wins proxy = no load printers = yes printing = cups printer name = cups printcap name = cups printcap cache time = 750 lpq cache time = 0 cups options = raw show add printer wizard = no # entry for SAMBA 4 in openSUSE 13.1 acl allow execute always = yes [homes] comment = Home Directories valid users = %S, %D%w%S browseable = No read only = No inherit acls = Yes [printers] comment = All Printers path = /var/tmp printable = Yes create mask = 0600 browseable = No valid users = +workgroup write list = +workgroup use client driver = yes read only = yes [share] comment = Share guest ok = no valid users = +workgroup browseable = yes writeable = yes force group = workgroup create mask = 740 directory mask = 750 force create mode = 020 force directory mode = 020 dos filemode = yes dos filetimes = yes dos filetime resolution = yes hide dot files = yes hide files = /lost+found/ nt acl support = no store dos attributes = yes map archive = no strict locking = yes oplocks = no level2 oplocks = no use sendfile = no msdfs root = no change notify = yes The users a created with: for ((i=1;i<21;i++));do smbpasswd -a -n user$i;done for ((i=1;i<21;i++));do smbpasswd -e -s user$i;done <<EOF $PASSWORD $PASSWORD EOF for ((i=1;i<21;i++));do pdbedit -c '[NX ]' -u user$i;done > /dev/null 2>&1 After Update/Upgrade (it is now a evergreen LTS) from repos i have samba version 4.2.4 and cannot access the shares anymore with WINDOWS7. WINDOWS shows system error 67 and samba shows in log: SPNEGO: login failed: NT_STATUS_NO_SUCH_USER How can i get rid of that? What do you need? testparm output? I tried: allow nt4 crypto = yes require strong key = no But they all didn't help Best regards --