Synchronise time with external NTP server on Windows Server
Time synchronization is an important aspect for all computers on the network. By default, the clients computers get their time from a Domain Controller and the Domain Controller gets his time from the domain’s PDC Operation Master. Therefore the PDC must synchronize his time from an external source. I usually use the servers listed at the NTP Pool Project website. Before you begin, don’t forget to open the default UDP 123 port (in- and outbound) on your firewall.
First, locate your PDC Server. Open the command prompt and type:
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netdom /query fsmo
Log in to your PDC Server and open the command prompt. run the following command:
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net stop w32time
Configure the external time sources, type:
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w32tm /config /manualpeerlist:”0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org”,0x8 /syncfromflags:MANUAL
run the following command:
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net start w32time
Re sync the time services, type:
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w32tm /resync /nowait
To check that the command has worked run the following:
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**_w32tm /query /configuration_**
When doing this on SBS you may get an access denied error if you do remove: /reliable:yes from the line on number 3.