[Samba] Issue changing password in Windows XP client.

Rommel Rodriguez Toirac rommelrt at nauta.cu
Thu May 28 12:43:31 UTC 2020

Hello to all; 

I use CentOS Linux release 7.8.2003. I have installed samba4 Version 4.11.4 

When compiling samba4 I used the following:

./configure --enable-fhs --prefix=/usr --sysconfdir=/etc --localstatedir=/var --enable-debug --enable-selftest -j2 -p --cross-answers --cross-execute --enable-cups --disable-iprint --with-acl-support --with-profiling-data --with-systemd 

I use samba on three servers, on one as Active Directory and Domain Controller, on the other two servers as Domain Servers mainly to share directories and files or saves. 
The operating systems used as clients in our network range mainly from Windows XP to Windows 10.
With Windows XP operating systems is happening that when it comes time for a user to change their password, they cannot do it, because the system tells them that they cannot find the domain or it is not available. So I have to change it directly on the samba4 server and that's when they can start their sessions. 
This situation is happening to me only with PCs with Windows XP operating systems. 
What could be happening?

This is my samba configuration on AD DC server: 

# Global parameters

workgroup = ATGTM00 	
realm = GTM.ONAT.GOB.CU 	
netbios name = GTMAD 	
server role = active directory domain controller 	
server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, winbindd, ntp_signd, kcc, dnsupdate 	
idmap_ldb:use rfc2307 = yes 	
time server = yes 	
eventlog list = Application System Security SyslogLinux 	
log file = /var/log/samba/%m.log 	
log level = 3 
max log size = 5000 	
tls enabled = yes 	
tls keyfile = /var/lib/samba/private/tls/gtmad.gtm.onat.gob.cu.key 	
tls certfile = /var/lib/samba/private/tls/gtmad.gtm.onat.gob.cu.cert 	
tls cafile = /var/lib/samba/private/tls/cacert.pem 	
ldap server require strong auth = allow_sasl_over_tls 


path = /var/lib/samba/sysvol/gtm.onat.gob.cu/scripts 
read only = No 


path = /var/lib/samba/sysvol 	
read only = No 

Thanks in advance.

Rommel Rodriguez Toirac
rommelrt at nauta.cu

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