Right-click [Start] button and open [run] and input [gpedit.msc] like follows.
Select [Administrative Templates] – [System] – [Windows Time Service] – [Time Providers] on the left pane, and Open [Enable Windows NTP Server] on the right pane.
Check a box [Enabled] which is upper-left like follows.
Back to [Windows Time Service] on the left Pane, and click to Open [Global Configuration Settings].
Check a box [Enabled] which is upper-left and change [AnnounceFlag] to [5] like follows. Then Close Group-Policy-Editor.
| Run [Server Manager] and Open [Tools] – [Services]. |
Select [Windows Time] Service and click [Start the service] or [Restart the service]. Furthermore, Change [Startup type] to [Automatic] if it is not the value.
If Windows Firewall is enabled, allow 123/UDP like follows.
