Windows-NTP校時

w32tm有兩個地方可以設定，一個是registry，一個是policy(GPO)
registry可以用regedit開啟，位於
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time

policy用gpedit.msc可以開啟，位於
Computer Configuration\Policies\Administrative Templates\System\Windows Time Service

下面指令測試是否可以連線到NTP server

w32tm /stripchart /computer:time.windows.com /samples:5 

下面指令可以設定NTP server

w32tm /config /manualpeerlist:NTP.iead.local /syncfromflags:manual /update

w32tm /query /configuration
確認看到以下訊息，(本機)代表是從registry讀取的設定，(原則)代表是從 policy(GPO) 讀取的設定

NtpServer (本機)
DllName: C:\Windows\SYSTEM32\w32time.DLL (本機)
Enabled: 1 (原則)
InputProvider: 0 (本機)
AllowNonstandardModeCombinations: 1 (本機)

w32tm /query /configuration /Verbose
可以詳細看到設定的NTP伺服器

設定w32tm log
https://learn.microsoft.com/en-us/troubleshoot/windows-server/active-directory/turn-on-debug-logging-in-windows-time-service

To turn on debug logging in the Windows Time service:

Start Registry Editor.

Locate and then click the registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config.

On the Edit menu, click New Value, and then add the following registry values:

Value Name: FileLogSize
Data Type: DWORD
Value data: 10000000
This registry value specifies the size of the log file in bytes. A value of 10000000 bytes will limit the log file to approximately 10 MB.

Value name: FileLogName
Data Type: String
Value data: C:\Windows\Temp\w32time.log
This registry value specifies the location of the log file. The path is not fixed. You can use a different path.

Value name: FileLogEntries
Data Type: String
Value: 0-116
This registry value specifies the level of detail of the information in the debug log. If you must have more detailed logging information, contact a Microsoft Support Professional.

執行 regedit
執行

IBM重點參考文章
https://www.dell.com/support/kbdoc/zh-cn/000134430/windows-time-service-%E6%95%85%E9%9A%9C-%E5%A4%84%E7%90%86

https://www.ravenswoodtechnology.com/network-time-protocol-configurations-a-deeper-dive/

https://www.ravenswoodtechnology.com/in-sync-proper-time-configuration-in-ad/

https://superuser.com/questions/451018/how-can-i-query-an-ntp-server-under-windows

https://www.renanrodrigues.com/post/how-to-configure-ntp-server-in-active-directory-step-by-step

Windows作為NTP server
https://support.hanwhavision.com/hc/en-us/articles/26570683589529-How-to-Setup-an-NTP-Server-on-Windows-10