Authoritative Windows NTP Server

Instructions on how to configure a Windows Server to be the Authoritative Time Server within a Domain.

Manually configure The Time Source

1. Run Regit and Navigate to the following Registry Subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\Type
2. Modify the value and set to NTP
3. Navigate to the following Registry Subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlags
4. Set the AnnounceFlags to a value of 5
5. Navigate to the following Registry Subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer
6. Modify the DWORD value to 1 to enable the NTPServer
7. Navigate to the following Registry Subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters
8. Modify ntpserver and enter pool.ntp.org,0x1
9. Navigate to the following Registry Subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\MaxPosPhaseCorrection
10. Modify the MaxPosPhaseCorrection DWORD to be 3600 AKA 1 hour in seconds.
11. Navigate to the following Registry Subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\MaxNegPhaseCorrection
12. Modify the MaxNegPhaseCorrection DWORD to be 3600 AKA 1 hour in seconds.
13. Close the Registry Editor.

Restart the Windows Time Service with the following command: net stop w32time && net start w32time

Refer to the commands.bat file in this repository for additional commands to troubleshoot Windows NTP issues on Domain Controllers and Windows Desktop editions.