Why does my Windows Time Service (w32time) not synchronize with my NTP Server?


Possible troubleshooting may proceed as follows:
  1. Firewall or port filter is blocking NTP packages. Make sure that firewall settings in Windows enable UDP protocol in both ways (inbound/outbound) on port 123. Read more…

  2. Some w32time versions coming with Windows XP or Windows Server 2003 may be unable to query the time from NTP servers. A workaround for the recognized problem is to change the behavior of the w32time. Read more…

  3. In the Windows Services check if w32time is enabled and running properly. Read more…

  4. The network connection with a NTP server may be unpredictable, prone to break downs or load delays. Read more…

More details on this topic find here.

MEINBERG NTP Time Server


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Why does my Windows Time Service (w32time) not synchronize with my NTP Server?