[Samba] Time synchronization issue

[William LIM]

Hi,

I have set a Samba AD DC on my network. Version is 4.1.17 on a Debian
Wheezy.

I have an issue on my Windows XP SP3 clients : the time on these computers
is not synchronized with my Domain Controler.

Big problem is, if time difference is considerable (more or less 5
minutes), users can not log in.

On the other hand, my server is correctly synchronized with NTP server.

I don't understand the reason of my problem, and don't know were to start
investigating.

Has anybody got this issue ?

Thanks

Will