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How to Configure a Windows Time Server

Author: David Evans

The latest Microsoft Windows operating systems have a time synchronisation utility installed by default called ‘Windows Time’. The Windows time service allows a Microsoft network to provide time synchronisation of machines in a domain. This article introduces how to configure the Microsoft Windows 2000 and 2003 operating systems to operate as a SNTPNTP Time Server. The article discusses how to change Windows registry entries to configure the Time Service.

Before modifying any Windows registry settings, it is a good idea to save the registry. In the even of any difficulties, the registry can be restored to its former state.

Windows 2000 Time Service

Windows 2000 has an integrated network time synchronization service, installed by default, which can be configured to synchronize to a Time Server. In fact, by changing associated registry settings, the service can act as both a time client and a time server to synchronize other network time clients.

The Windows Time service should be present in the systems service list. The application executable is 'w32time.exe'. The parameter list for time service should be present in the in the registry at:


The Windows 2000 operating system can operate as a time client and synchronise to a time server by setting the parameter 'NTP Server' to the IP address of a Time Server.

By default, the Windows 2000 machine will synchronize to the specified time server every 8 hours, or 3 times a day. This may not be enough to maintain accurate synchronization and can be easily increased. Setting the ‘Period’ parameter to how many times each day synchronisation is required can reduce the period. Setting the ‘Period’ parameter to 48 will activate synchronization with the time server once every half hour.

The Windows 2000 operating system can also be configured to act as a time server by setting the 'Local NTP' registry setting to '1'.

After changing any of the registry settings for the windows time service, the service must be restarted for the settings to take effect. The time service can be started or stopped from the service control applet in the Administrative Tools menu. The service can also be controlled via the DOS net command thus:

‘net start w32time’ and ‘net stop w32time’

windows 2003 Time Service

With Windows 2003, Microsoft has expanded on the original Windows 2000 SNTP time service by providing a true NTP implementation. The Windows 2003 time service, installed by default, can synchronise to a NTP Server. Indeed, by changing registry settings, the time service can act as both a time server and client to synchronize other time clients in the domain.

The 'Windows Time' service should be present in the systems service list. The application executable is 'w32time.exe'. The parameter list for the Windows 2003 time service should be present in the registry at:


To configure the Windows 2003 operating system to synchronize to an external time server, edit the following registry entries:


Set the ‘Type’ registry entry to ‘NTP’, which specifies synchronization to a NTP time server.


The ‘Special Poll Interval’ registry entry defines the period in seconds that the Windows 2003 operating system should poll the time server. A recommended value is 900, which equates to a polling period of every 15 minutes.


Set the ‘Announce Flags’ registry entry to 5 indicating a reliable time reference.


Changing the ‘Enabled’ flag to the value 1 enables the NTP Time Server.


The ‘NTP Server’ parameter is used to provide a list of DNS names or IP addresses, separated by a space, of time servers that the Windows 2003 operating system can synchronize to.

Troubleshooting the Time Service

A number of isuues may be encountered when configuring the Microsoft Windows Time Service. SNTP and NTP operates using the UDP protocol over TCP/IP. Therefore, the TCP/IP network protocol must be active for SNTPNTP to operate. Synchronisation issues may also arise when SNTPNTP attempts to synchronise to an inaccurate time server reference or if network delays are excessive.

Synchronising Network Device and Components

In addition to synchronizing Microsoft Windows servers and workstations, time servers can also be used to synchronise network devices, such as switches, routers and hubs. Any network infrastructure that can synchronise to a NTP or SNTP time server can be pointed to the Windows time server to obtain synchronisation. In this way the whole network and accompanying infrastructure can be accurately synchronised to a time reference.

Source: ArticlesBase.com

About the Author:D. Evans develops Windows SNTP\NTP time server synchronisation solutions that ensure accurate time on PC's and networks. Dave has been heavily involved in the development of dedicated Windows time server systems, NTP synchronized digital clock systems and atomic clock synchronization products. Click here to find out more about Windows Time Server solutions.
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At June 9, 2007 at 10:50 AM, Blogger All Blog Spots said...

nice blog    

At June 12, 2007 at 5:06 AM, Blogger mueja said...


At June 23, 2007 at 2:10 AM, Blogger freaky mind said...

cool blog you may want to check out mine


At July 6, 2007 at 12:34 AM, Blogger icecold1967 said...



At July 11, 2007 at 10:02 PM, Blogger Evgeniy and Stepan. said...

Good afternoon and happiness to You!
Many people to help to destroy the SOVIET UNION, who will help this family
For each comes the moment in the life, when it is necessary to lengthen the
hand of aid,if you desire to itself good.
We has already been turned in charities organizations. They threw out our
rotation. We request you by name God- help them.
This is a letter from a group of college students from Omsk, Russia. We
have formed this team in pursuit of one common goal charitable fundraising
to help Maria Komeliagina, a very sick girl who needs urgent medical
Both her parents are handicapped and hardly able to be of any financial
The Bible says, Give to Those Asking. Instead, many prefer to deprive those
who ask of their last bits. The Bible also says that even dogs sometimes
get leftovers from their master s table. Now, we are asking you: is this
sick girl inferior to dogs? Does she deserve to die an excruciating death
because of her illness? We have been trying to raise funds for this
desolate family for 3 years, and often encountered manifestations of the
world s cruelty, human cold-heartedness and indifference toward someone
else’s distress. However, we also met good and charitable people who sent
their sympathetic replies to our letters. Those people sent Maria their
love in words, food, vitamins, some clothes, and toys. Some of them sent
money, too.
If you are able to provide Maria and her parents ANY assistance at all,
please do not hesitate to do so. Anything will do, even if you just advise
us of an organization that really helps unfortunate people like this poor
The amount that this family needs is huge, it totals to $16,000. We are
Fully aware of the enormity of this amount and of the fact that very few people
Are ready to give it to a sick child if the child is not their own. But, if
mercy and grace are still alive in your heart, please help them with
whatever you can. If you have an opportunity, any information about this
family published in the Internet would help, too (please see the webpage

It can also be any money, or medicine, or food, or old toys, or second-hand
clothes (they will make it over for Maria). They would greatly appreciate
any assistance.
We hope you will extend your sympathy to this family and their daughter.
Their address is:
Leonid Ivanovich Komeliagin.
y. 20 n/c - 51A, k-24
Telephone: +7(3812) 67 39 07
Speak only Russian.

Donations accounts:
For: SBERBANK Zapadno-Sibirsky head office, Omsk, Branch 8634/0195
Account wich institution: SWIFT: SABRRUMMTN1
Account number: 42 307 840 6 4500 0334041
Name: Komeliagin Leonid Ivanovich.
Details of payments: Donations for Medical Treatment.

For Leonid Komeliagin


Sincerely-Evgeny Filippov,Stepan Shpeht, Student Team member.
May God bless you for your kindness and grace!
Passing by the grief of others, you will stumble against its.
He will place the sheep at his right hand and the goats at his left.
There can be who that will not regret 5,10, 20 dollars for this family.    

At July 12, 2007 at 9:10 AM, Blogger david santos said...

Thanks for you work and have a good weekend    

At July 16, 2007 at 1:05 AM, Blogger nurceyiz said...

nice blog

At July 19, 2007 at 10:01 AM, Blogger mandy said...

your the coolest blog so far. you are also the first person that i wrote aa comment to! keep up the good work! check out my blog! i'm mandy. it is about petland    

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