Specify a reliable external time source for domain controllers

1. Query the time source used by the current domain controller
   

   w32tm /query /source

   The default is time.windows.com, you can try to ping it, if it doesn't work, consider changing to another NTP server

2. Open the registry and find the following location

   "NTPserver under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters Enter the address of the NTP server that can be used.

3. You can find a suitable NTP server on the following website, try PING before using it

   http://www.ntp.org.cn/pool.php#china

4. Restart the w32tm service after making changes

   net stop w32time

   net start w32time

5. Query the time source again, w32tm /query /source

   At this point, it has been changed to the set NTP server.