Set time on all computers in a peer-to-peer network so time is the same on all computers.

I have 4 computers all running Windows 7 pro.  All but one keep accurate time.  All are set to use time.windows.com for time synchronization.  Yes, I checked the time zone and all are set to the correct time zone.

What is the best way to make sure all the computers are set to the same time?
If time.windows.com  is not the best time source, what do you recommend?

I am not a computer expert so please give me detailed answers.

Thank you.
donpickAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
I've been using NetTime in places - http://www.timesynctool.com/
Senior IT System EngineerIT ProfessionalCommented:
Hi Don, if your computer is domain joined, you can use the below steps:

whichever server you wanted to set as PDC master, once you did that, make that server as authoritative NTP server by running below commands from the elevated prompt:

w32tm /config /manualpeerlist:timeserver,0x8 /syncfromflags:manual /reliable:yes /update

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timeserver: get the list from: http://www.pool.ntp.org/en/ according to your closest Geographical region.

Note that you should sync your PDC (Primary Domain Controller Role) with at least two NTP servers on the internet, in that case, the command would be:
w32tm /config /manualpeerlist:"ts1.pool.org,0x8 ts2.pool.org,0x8" /syncfromflags:manual /reliable:yes /update

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After that check, if event ID 37 and 35 is getting generated in system logs
The check how PDC is getting time:
w32tm /query /source
w32tm /query /status

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Once above is successful, then run below command on all other Domain Controllers from the elevated prompt:
w32tm /config /syncfromflags:domhier /update

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Jose Gabriel Ortega CastroCEO Faru Bonon IT - EE Solution ExpertCommented:
Depending on your router, you need to check if there is an option of configuring additional properties to DHCP server (router).
for example in the Interfaces/Internal of a fortinet 60d you should have something like this:
ex.pngSo Configuring the rule 4 to an IP (internal or external with syncronize all computers to that IP or NTP server).
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AlanConsultantCommented:
Hi DonPick,

How old is the machine that is experiencing the drifting time?  If you have already configured it to check a timeserver, then it might be something else.

It could be that your CMOS battery is low or dead.  They cost almost nothing (I can get them for about $1 each here), so you might want to try replacing that.  Most machines it is very easy - just Google your machine make / model, or do the same on YouTube, and you'll likely find a video of someone showing you exactly how to do it.

It is also possible that malware can cause time drifting, but I would check the batter in the first instance.

Alan.
Sam Simon NasserIT Support ProfessionalCommented:
go to command as admnistrator and run this:
w32tm /resync

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donpickAuthor Commented:
Thank you all for your help.
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