External NTP For Windows 2008 DC Hyper-V

Please refer to the following tutorial on how to configure External NTP for Windows 2008 R2 Domain Controller (DC) running as VM in Hyper-V / VMware

To verify whether Windows 2008 R2 DC is configured to Sync with local Hyper-V Host

w32tm /query /source
VM IC Time Synchronization Provider

Disabled the Time Synchronization for the Windows 2008 R2 DC with local Hyper-V Host and restart the Windows 2008 R2 Domain Controller

Enter the following command to configure Windows 2008 R2 DC to Sync with External NTP

w32tm /config /manualpeerlist:my.pool.ntp.org /syncfromflags:manual /reliable:yes /update
w32tm /resync
w32tm /query /source #it should point to my.pool.ntp.org now

To verify the Time between local DC and External NTP Server

w32tm /stripchart /computer:my.pool.ntp.org /samples:5 /dataonly

Verify TimeSync in Domain Joined Member Server

w32tm /query /source

w32tm /monitor
AD01.MyLab.local *** PDC ***[]:
    ICMP: 0ms delay
    NTP: +0.0000000s offset from AD01.MyLab.local
        RefID: time.unisza.edu.my []
        Stratum: 4

Reverse name resolution is best effort. It may not be
correct since RefID field in time packets differs across
NTP implementations and may not be using IP addresses.
PS C:\Windows\system32>

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