Hi Paul,
Glad to see the servers are starting for you now.
For Win 10 - I'm going to suspect that at some time you had to 'modify' things to work with the old Samba 3.6 - something like https://centosfaq.org/centos/samba-issues-with-win-10/
This may have set security settings in Win10 that are now not allowed by Samba 4.11.x. For example - you may have forced SMB1 to be used by Win10 - this protocol is disabled by default in Samba 4.11 - but can be enabled by adding 'client min protocol=NT1' to the [global] section of smb.conf
I have the 'client min protocol=NT1' in my global section.
Please see here:
# Samba config file created using SSCC ver. 1.1.3
# from Mike@PC25_AOS
# Date: 14 Jun 2020 13:15:10
[global]
workgroup = xxx
server string = %h Samba Server
null passwords = Yes
guest account = guest
username map = C:\MPTN\ETC\samba\private\smbusermap
log file = C:\MPTN\ETC\samba\log\log.smbd.%U.%M
max protocol = SMB2
time server = Yes
load printers = No
printcap name = F:\etc\printcap
enumports command = F:\Programs\Samba\enumports.cmd
add user script = F:\Programs\Samba\usermod.cmd -a "%u"
rename user script = F:\Programs\Samba\usermod.cmd -r "%uold" "%unew"
delete user script = F:\Programs\Samba\usermod.cmd -x "%u"
add group script = F:\Programs\Samba\groupmod.cmd -a "%g"
delete group script = F:\Programs\Samba\groupmod.cmd -x "%g"
add user to group script = F:\Programs\Samba\groupmod.cmd -j "%g" "%u"
delete user from group script = F:\Programs\Samba\groupmod.cmd -l "%g" "%u"
set primary group script = F:\Programs\Samba\usermod.cmd -p "%u" "%g"
add machine script = F:\Programs\Samba\usermod.cmd -a "%u"
lm announce = Yes
wins support = Yes
add share command = F:\Programs\Samba\addshare.cmd
change share command = F:\Programs\Samba\changeshare.cmd
delete share command = F:\Programs\Samba\delshare.cmd
lock directory = C:\MPTN\ETC\samba\lock
nmbd bind explicit broadcast = No
comment = X250 mit OS/2
create mask = 0777
ea support = Yes
store dos attributes = Yes
client min protocol = NT1
name resolve order = lmhosts wins host bcast
wins server =
log level = 2
Greetings,
Mike