How to configure an authoritative time server in Windows Server 2012

Hello folks,

Ivailo here to talk about setting up an NTP on a PDCe. Remember this The MS tool on the page used to work like a charm. Unfortunately even though according to the “Applies to” it should work on Windows Server 2012 – it doesn’t. Of course one can follow the instructions how to configure NTP manually but I am doing this way too often for my customers so I decided to save few minutes the next time I need to configure NTP on a PDCe. This is why I created the following registry hack that can be applied simply by double clicking on it. Of course you can also apply the settings using the following command…

w32tm /config /syncfromflags:manual /manualpeerlist:”<Server1>,0x1 <Server2>,0x1 <Server3>,0x1″ /update /reliable:yes

…but it will only change the AnnounceFlags, Type, and the source and leave all intervals intact which is not a best practice.

Copy the text bellow including “Windows Registry Editor Version 5.00” and paste in your favorite text editor (notepad will work)! Change the time sources depending on the server physical location (in my case US). Append 0x1 to each server and separate multiple servers with space! Save the file (for example NTPConfiguration.reg)!

Windows Registry Editor Version 5.00






Restart the time service:

net stop w32time && net start w32time


Ivailo Mitkov