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There are many posts concerning issues when dealing with time synchronisation over a domain which holds virtualised PDC Emulators (see this article).

As a result our PDC Emulator time (and domain time), although configured to sync from an authoritative NTP server, was wrong because of the Hyper-V Integration services/Time synchronisation. As soon as this was disabled, the PDC emulator (and domain) time began synchronising correctly, but the Hyper-V host time kept being wrong.

I suspect the Hyper-V host (2019) is not synchronising time from the domain.

How can I ensure this?

Riccardo
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1 Answers1

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From an elevated command prompt on the Hyper-V host run the following:

net stop w32time
w32tm /unregister
w32tm /register
net start w32time
w32tm /config /syncfromflags:DOMHIER /update
net stop w32time
net start w32time
joeqwerty
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  • @joeqwerty, it would be great if you could expand the answer a little to explain what those commands do. I assume they are telling Windows to ignore NTP and use the domain's time sync services instead, but it would be nice if this could be made explicit in the answer. – Paul Gear Mar 31 '22 at 07:13