[Samba] Joining Windows 10 Domain Member to Samba AD/DC

[Mark Foley]

On Wed Jan 17 06:13:56 2024 Luis Peromarta via samba <samba at lists.samba.org>
>
> I have the impression your DC’s ntp server is not working properly for whatever reason. Your windows machines try to grab time for them, can’t, and then default to local coms clock or some other time source.
>
> From a windows member machine, can you try :
>
> w32tm /stripchart /computer:us.pool.ntp.org /dataonly /samples:5
>
> That should work. Then try:
>
> w32tm /stripchart /computer:your.dc.address /dataonly /samples:5
>
> And see if you get a similar response.
> On Jan 16, 2024 at 20:31 +0100, Mark Foley <mfoley at novatec-inc.com>, wrote:
> >
> > As I've mentioned, this time synchromization worked perfectly well when this
> > same Windows domain member was connected to the Samba 4.8.2 domain.

Did you mean "us.pool.ntp.org"? That failed, but 0.pool.ntp.org worked. So did
the one using my DC. I had actually tried that before and it worked before.

My latest attempt was the following, in PowerShell (based on yet another post):

stop-service w32time 
w32tm /unregister 
w32tm /register 
start-service w32time 
w32tm /config /manualpeerlist:0.pool.ntp.org /syncfromflags:manual /update
w32tm /config /reliable:yes 
restart-service w32time 
w32tm /resync 
w32tm /query /source

Notice that I'm not using my DC as the time source, so whether that source is a
problem is eliminated as a variable.  After the 'w32tm /resync' I got "the
computer did not resync because no time data was available." And the w32tm
/query /source is back to "Local CMOS Clock". 

This is definitely a problem on the Windows end. I'm theorizing that perhaps
the switch of domain names from mail.hprs.local to dc1.hprs.locl could be the
problem. My next test will be to re-provision my DC with the old domain name,
restore the Windows back to when it was a member of that domain and see if
things are different.

As I keep mentioning, this all worked perfectly when this
same Windows domain member was time sourcing from the Samba 4.8.2 DC.