Moving Day

How the time flies. With over 2 years since the last post, it is high time we get this blog moving again. Looking at the traffic statistics, there were nearly 50k views of the NET TIME and w32time post, so it is evident that folks are still interested in this content. However, since I am…


NET TIME and w32time

It seems there is a bit of ambiguity out there regarding the relationship between w32time and the NET TIME command. Well, here are the answers, straight from the horse’s mouth. Taking it from the top  As all of you know (or at least should) know by now, w32time is the Windows Time Service, which is an…

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Group Policy Settings Explained

In an effort to alleviate confusion around the Windows Time Service group policy settings, here is a detailed explaination of the various settings, what their respective purposes are, and a small bit about how to configure them. Keep in mind that Windows Time Service is designed to be very robust right out of the box….

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Demystifying Group Policy Settings

The settings for the Windows Time Service exposed through group policy have long been seen as a bit mysterious, and for good reason. Well, today we will take the first steps towards remedying that problem. After spending a good amount of time with one of my favorite writers (thanks Kurt!), we have developed a revised text…

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Getting ahead of the storm

For those out there who haven’t yet heard, VMWare is experiencing a problem (as of Aug 12) with licensing for ESX and ESXi. You can find out more here: http://kb2.vmware.com/kb/1006716.html The crux of the issue seems to be that a recent update caused the license to expire, preventing any guest OSs from starting. A talked…

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High accuracy time, and why we don’t support it

More than any other, the most often asked question of the Windows Time Service is “How do I configure w32time for high accuracy?” Bob Drake has taken the time to answer this question over at the Ask the Directory Services Team blog. You can read his post here: http://blogs.technet.com/askds/archive/2007/10/23/high-accuracy-w32time-requirements.aspx

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To be (reliable) or not to be (reliable)

Of the many things that w32time does, figuring out which host to sync from is one of the most important, and thus, one of the most talked about. In the stand-alone scenario, peer discovery (aka figuring out which host to sync with) is an entirely manual process. W32time chooses a peer based on the contents…

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Configuring a Standalone NtpServer

Recently, I had a customer ask if they can use w32time as a time source for other computer & devices on their network. The Windows Time Service is fully capable of acting as a time source for anything that is NTPv3 compliant. Before we start firing up w32tm to configure the service, we will examine…

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Configuring the Time Service: Max[Pos/Neg]PhaseCorrection

In the last few months of the Windows Server 2008 development, a good friend of mine was discussing a problem they have been seeing with customers. The problem, lovingly titled as the “Large Time Jump” issue involves a machine in the domain (usually the PDC) making a large jump in time, either forward or backwards….

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