Configuring Active Directory Time using the W32TM Utility.

Active Directory domain time in my lab domain has been off by a few minutes of UTC time for a while now. Resetting time across an Active Directory domain is a straight forward process using the W32tm command line tool. My first step was to determine the current AD domain time source on my client:

PS C:\> w32tm /query /source
WS2012R2.domainname.net

Explore the options available with the w32tm tool:

PS C:\> w32tm | more

Time1

Time2

At this time, I am more interested in the /config switch of the w32tm tool and it's available parameters :

w32tm /config [/computer:] [/update]
[/manualpeerlist:] [/syncfromflags:]
[/LocalClockDispersion:]
[/reliable:(YES|NO)]
[/largephaseoffset:]

Configure the Domain Controller 'WS2012R2' as Time Server:

PS C:\Users\admin\> w32tm /config /computer:ws2012r2 /manualpeerlist:time.windows.com /reliable:YES /syncfromflags:Manual /update
The command completed successfully.

Resync the Time on The Server:

[ws2012r2]: PS C:\Users\admin\Documents> w32tm /resync /nowait /rediscover
Sending resync command to local computer
The command completed successfully.

Restart the Time Service:

[ws2012r2]: PS C:\Users\admin\Documents> Restart-Service -Name w32time

Query for the current Time Source:

[ws2012r2]: PS C:\Users\admin\Documents> w32tm /query /source
time.windows.com

Configure the second domain controller (DC01) Time Source as WS2012R2 :

PS C:\> Enter-PSSession -ComputerName dc01
[dc01]: PS C:\Users\admin\Documents> w32tm /query /source
VM IC Time Synchronization Provider
[dc01]: PS C:\Users\admin\Documents> w32tm /config /syncfromflags:domhier /update
The command completed successfully.
[dc01]: PS C:\Users\admin\Documents> Restart-Service -Name w32time
[dc01]: PS C:\Users\admin\Documents> w32tm /resync /nowait /rediscover
Sending resync command to local computer
The command completed successfully.

Disable VM Time Synchronization on the second domain controller (DC01):

Time3

Verify Time Source on DC01 :

[dc01]: PS C:\Users\admin\Documents> w32tm /query /source
WS2012R2.domainname.net

The result of the query shows DC01 time source as WS2012R2 domain controller. The domain time on the client machines also automatically reset to the new time.

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This entry was posted in Active Directory, Active Directory Domain Services, Active Directory Time, AD Forest, Domain Controller, PowerShell and tagged , . Bookmark the permalink.

One Response to Configuring Active Directory Time using the W32TM Utility.

  1. Pingback: Configuring Date and Time on a Cisco 3750G Layer 3 Switch. | chinny chukwudozie,it pro

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