[ntp:questions] ntpd service doesn't connect to remote servers on Windows XP

Danny Mayer mayer at ntp.org
Mon Apr 6 04:01:47 UTC 2009

David J Taylor wrote:
> Dave Hart wrote:
>> On Apr 2, 8:54 am, "David J Taylor" <david-tay... at blueyonder.neither-
>> this-bit.nor-this.co.uk> wrote:
>>> Running from the command-line, we get:
>>> 2 Apr 09:39:08 ntpd.exe[3984]: frequency initialized 0.000 PPM from
>>> e:\NTP\etc\ntp.drift
>>> 2 Apr 09:39:22 ntpd.exe[3984]: ntservice: The Network Time Protocol
>>> Service has stopped.
>>> 2 Apr 09:40:16 ntpd.exe[344]: logging to file log.txt
>>> 2 Apr 09:40:16 ntpd.exe[344]: Can't create I/O event handle:
>>> Input/output error - another process may be running - EXITING
>>> 2 Apr 09:40:16 ntpd.exe[344]: ntservice: The Network Time Protocol
>>> Service has stopped.
>> The Can't create I/O event handle is the error you'll see with
>> Meinberg's vegas-v2 when there is another ntpd.exe hanging around.
>> Keep in mind the message claiming the service has stopped is a lie, it
>> is coming from the service as it is about to stop.  My QPC releases as
>> well as official versions starting with 4.2.4p7RC1 and 4.2.5P160 will
>> give a differrent error in that case, likely complaining about being
>> unable to bind to address for example, possibly with a
>> different IP address but definitely with port 123.
>> That doesn't explain why the first process failed, but it does hint it
>> is not terminating cleanly after failing.
>> Martin's suggestion to try a debug binary with tracing enabled is
>> probably the next fruitful approach.
>> Cheers,
>> Dave Hart
> Thanks, Dave.  I've pointer the user to debug binaries.  I should tell him 
> to add a PAUSE after the NET STOP in his batch file.

Instead of all that, just run netstat -an from the command line and see
if there is anything using 123/UDP port on the local addresses. You can
then used netstat -ano to get the PID of the application using that port.


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