Sambaをインストール後「Smb.conf」を編集目的でオープン、ファイルの内容が大幅に変更されているので取り敢えずオリジナルの状態で「Testparm」を実行、エラー無く終了したので、「Sudo service smbd restart」を実行。

「Smb.conf」の内容
[global]
realm =
netbios name = T5810-UB
server string = Samba file and print server
workgroup = Workgroup
security = ads
hosts allow = 127. 192.168.0.
interfaces = 127.0.0.1/8 192.168.0.0/24
bind interfaces only = yes
remote announce = 192.168.0.255
remote browse sync = 192.168.0.255
printcap name = cups
load printers = yes
cups options = raw
printing = cups
guest account = smbguest
log file = /var/log/samba/samba.log
max log size = 1000
null passwords = no
username level = 6
password level = 6
encrypt passwords = yes
unix password sync = yes
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
local master = yes
domain master = yes
preferred master = yes
domain logons = yes
os level = 80
logon drive = m:
logon home = \\%L\homes\%u
logon path = \\%L\profiles\%u
logon script = %G.bat
time server = yes
name resolve order = wins lmhosts bcast
wins support = yes
wins proxy = yes
dns proxy = no
preserve case = yes
short preserve case = yes
client use spnego = no
client signing = no
client schannel = no
server signing = no
server schannel = no
nt pipe support = yes
nt status support = yes
allow trusted domains = no
obey pam restrictions = yes
enable spoolss = yes
client plaintext auth = no
disable netbios = no
follow symlinks = no
update encrypted = yes
pam password change = no
passwd chat timeout = 120
hostname lookups = no
username map = /etc/samba/smbusers
passdb backend = tdbsam
passwd program = /usr/bin/passwd '%u'
passwd chat = *New*password* %n\n *ReType*new*password* %n\n *passwd*changed*\n
add user script = /usr/sbin/useradd -d /dev/null -c 'Samba User Account' -s /dev/null '%u'
add user to group script = /usr/sbin/useradd -d /dev/null -c 'Samba User Account' -s /dev/null -g '%g' '%u'
add group script = /usr/sbin/groupadd '%g'
delete user script = /usr/sbin/userdel '%u'
delete user from group script = /usr/sbin/userdel '%u' '%g'
delete group script = /usr/sbin/groupdel '%g'
add machine script = /usr/sbin/useradd -d /dev/null -g sambamachines -c 'Samba Machine Account' -s /dev/null -M '%u'
machine password timeout = 120
idmap uid = 16777216-33554431
idmap gid = 16777216-33554431
template shell = /dev/null
winbind use default domain = yes
winbind separator = @
winbind cache time = 360
winbind trusted domains only = yes
winbind nested groups = no
winbind nss info = no
winbind refresh tickets = no
winbind offline logon = no

[homes]
comment = Home Directories
path = /home
valid users = %U
read only = no
available = yes
browseable = yes
writable = yes
guest ok = no
public = no
printable = no
locking = no
strict locking = no

[netlogon]
comment = Network Logon Service
path = /var/lib/samba/netlogon
read only = no
available = yes
browseable = yes
writable = no
guest ok = no
public = no
printable = no
locking = no
strict locking = no

[profiles]
comment = User Profiles
path = /var/lib/samba/profiles
read only = no
available = yes
browseable = yes
writable = yes
guest ok = no
public = no
printable = no
create mode = 0600
directory mask = 0700
locking = no
strict locking = no

[printers]
comment = All Printers
path = /var/spool/samba
browseable = yes
writable = no
guest ok = no
public = no
printable = yes
locking = no
strict locking = no

[pdf-documents]
path = /var/lib/samba/pdf-documents
comment = Converted PDF Documents
admin users = %U
available = yes
browseable = yes
writeable = yes
guest ok = yes
locking = no
strict locking = no

[pdf-printer]
path = /tmp
comment = PDF Printer Service
printable = yes
guest ok = yes
use client driver = yes
printing = bsd
print command = /usr/bin/gadmin-samba-pdf %s %u
lpq command =
lprm command =


****T5810-UB:~$ testparmの実行結果
Load smb config files from /etc/samba/smb.conf
WARNING: The "null passwords" option is deprecated
Unknown parameter encountered: "password level"
Ignoring unknown parameter "password level"
WARNING: The "encrypt passwords" option is deprecated
WARNING: The "client schannel" option is deprecated
WARNING: The "server schannel" option is deprecated
Unknown parameter encountered: "update encrypted"
Ignoring unknown parameter "update encrypted"
WARNING: The "idmap uid" option is deprecated
WARNING: The "idmap gid" option is deprecated
Unknown parameter encountered: "winbind trusted domains only"
Ignoring unknown parameter "winbind trusted domains only"
Loaded services file OK.
WARNING: socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
This warning is printed because you set one of the
following options: SO_SNDBUF, SO_RCVBUF, SO_SNDLOWAT,
SO_RCVLOWAT
Modern server operating systems are tuned for
high network performance in the majority of situations;
when you set 'socket options' you are overriding those
settings.
Linux in particular has an auto-tuning mechanism for
buffer sizes (SO_SNDBUF, SO_RCVBUF) that will be
disabled if you specify a socket buffer size. This can
potentially cripple your TCP/IP stack.

Getting the 'socket options' correct can make a big
difference to your performance, but getting them wrong
can degrade it by just as much. As with any other low
level setting, if you must make changes to it, make
small changes and test the effect before making any
large changes.

Server role: ROLE_DOMAIN_MEMBER

Press enter to see a dump of your service definitions

# Global parameters
[global]
    add group script = /usr/sbin/groupadd '%g'
    add machine script = /usr/sbin/useradd -d /dev/null -g sambamachines -c 'Samba Machine Account' -s /dev/null -M '%u'
    add user script = /usr/sbin/useradd -d /dev/null -c 'Samba User Account' -s /dev/null '%u'
    add user to group script = /usr/sbin/useradd -d /dev/null -c 'Samba User Account' -s /dev/null -g '%g' '%u'
    allow trusted domains = No
    bind interfaces only = Yes
    client schannel = No
    client signing = No
    client use spnego = No
    delete group script = /usr/sbin/groupdel '%g'
    delete user from group script = /usr/sbin/userdel '%u' '%g'
    delete user script = /usr/sbin/userdel '%u'
    dns proxy = No
    domain logons = Yes
    domain master = Yes
    guest account = smbguest
    idmap gid = 16777216-33554431
    idmap uid = 16777216-33554431
    interfaces = 127.0.0.1/8 192.168.0.0/24
    log file = /var/log/samba/samba.log
    logon drive = m:
    logon home = \\%L\homes\%u
    logon path = \\%L\profiles\%u
    logon script = %G.bat
    machine password timeout = 120
    max log size = 1000
    name resolve order = wins lmhosts bcast
    obey pam restrictions = Yes
    os level = 80
    passwd chat = *New*password* %n\n *ReType*new*password* %n\n *passwd*changed*\n
    passwd chat timeout = 120
    passwd program = /usr/bin/passwd '%u'
    preferred master = Yes
    printcap name = cups
    remote announce = 192.168.0.255
    remote browse sync = 192.168.0.255
    security = ADS
    server schannel = No
    server signing = No
    server string = Samba file and print server
    socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
    template shell = /dev/null
    time server = Yes
    unix password sync = Yes
    username level = 6
    username map = /etc/samba/smbusers
    winbind cache time = 360
    winbind nested groups = No
    winbind nss info = no
    winbind separator = @
    winbind use default domain = Yes
    wins proxy = Yes
    wins support = Yes
    idmap config * : range = 16777216-33554431
    idmap config * : backend = tdb
    cups options = raw
    follow symlinks = No
    hosts allow = 127. 192.168.0.


[homes]
    comment = Home Directories
    locking = No
    path = /home
    read only = No
    strict locking = No
    valid users = %U


[netlogon]
    comment = Network Logon Service
    locking = No
    path = /var/lib/samba/netlogon
    strict locking = No


[profiles]
    comment = User Profiles
    create mask = 0600
    directory mask = 0700
    locking = No
    path = /var/lib/samba/profiles
    read only = No
    strict locking = No


[printers]
    browseable = No
    comment = All Printers
    locking = No
    path = /var/spool/samba
    printable = Yes
    strict locking = No


[pdf-documents]
    admin users = %U
    comment = Converted PDF Documents
    guest ok = Yes
    locking = No
    path = /var/lib/samba/pdf-documents
    read only = No
    strict locking = No


[pdf-printer]
    comment = PDF Printer Service
    guest ok = Yes
    lpq command =
    path = /tmp
    printable = Yes
    print command = /usr/bin/gadmin-samba-pdf %s %u
    printing = bsd
    use client driver = Yes


/home/share　に共有を設定試みるが下記エラーが表示されNG
'net usershare' がエラー 255 を返しました: Unknown parameter encountered: "password level"
Ignoring unknown parameter "password level"
Unknown parameter encountered: "update encrypted"
Ignoring unknown parameter "update encrypted"
Unknown parameter encountered: "winbind trusted domains only"
Ignoring unknown parameter "winbind trusted domains only"
Unknown parameter encountered: "password level"
Ignoring unknown parameter "password level"
Unknown parameter encountered: "update encrypted"
Ignoring unknown parameter "update encrypted"
Unknown parameter encountered: "winbind trusted domains only"
Ignoring unknown parameter "winbind trusted domains only"
net usershare add: cannot share path /home/share as we are restricted to only sharing directories we own.
    Ask the administrator to add the line "usershare owner only = false"
    to the [global] section of the smb.conf to allow this.

ファイル→他の場所→SAMBA24をクリック　

当然エラー表示

「要求された場所にアクセスできません。
サーバーから共有リストを取得できませんでした。：接続を拒否されました。」

となり、自己、他のUbuntuPC、Windows 10PCでも同様に接続不可です。
この状態を打開する方策をアドバイスお願いします。