[Samba] old DC showing up

Sonic sonicsmith at gmail.com
Sun Jan 19 17:51:57 UTC 2025


Doing some tests with the recent reported samba/chrony/windows time sync
issues I ran across this on 2 separate domains:
==============================
C:\Windows\System32>w32tm /monitor
old.dc.example.com [error WSAHOST_NOT_FOUND]
new.dc.example.com *** PDC ***[192.168.37.9:123]:
    ICMP: 32ms delay
    NTP: error ERROR_TIMEOUT - no response from server in 1000ms
==============================

This post is not about the time issue, but that the command above looks for
the old no longer present DC.
Both domains were upgraded from older versions and the old DC was
decommissioned over a year ago, yet somehow systems are looking for it on
one level.
This occurs with systems that had never previously seen the old DC.
How to resolve this old DC cruft?
Thank you.


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