How to configure Domain Controller (DC) as NTP time server

If server is in a Hyper-V VM

If your Windows Server machine is a VM inside Hyper-V, you have to disable time sync. Go to:

• VM settings->  Management->  Integration Services

and uncheck:

• Time Synchronization.

Configure Windows Time Service (NTP) on the Domain Controller

• w32tm /config /manualpeerlist:pool.ntp.org /syncfromflags:MANUAL

Apply the changes by restarting the time service (stop and then start)

• Stop-Service w32time
• Start-Service w32time

Configure Windows Clients

Go to the client machines and run the following command on PowerShell to force them to sync their time/clock with the domain controller;

• w32tm /resync

Check Status

You can check the time synchronization status using the following command.

• w32tm /query /status

If Time Service does not exist 

• w32tm /unregister
• w32tm /register

Source: https://www.faqforge.com/windows-server-2016/configure-ntp-server-windows-server-2016/