Time Sync XP with External Time Source

Using Windows XP SP2, we are trying to time sync the computer clock with an external time source.

using regedit, we have changed the registry settings as per http://support.microsoft.com/kb/314054

net stop w32time works sucessfully

net start w32time works sucessfully

w32tm /resync /rediscover returns the following message: the computer did not resync because no time date was available

manual update of time via windows clock dialog box returns message: an error occurred getting the status of the last syncronisation. Element not found.

we can ping the ip address of the external time server

using w32tm /stripchart /dataonly /samples:5 /computer:xxx.xxx.xxx.xxx returns valid time differences of +12.43 seconds.

any help would be much appreciated.

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