w32tm /query /computer problem

Hi,

I'm trying to use "w32tm" to check on out servers here and I'm,
seeing the follwoing problem with some (not all) of
our server and can't seem to find out why. Here's the command:

[WIN7-LT]-> w32tm /query /verbose /computer:server1 /status
The following error occurred: The procedure number is out of range.
(0x800706D1)

but other machines are fine. Any ideas what I should check here?

Thanks for any help!
Tom