Can be useful for non-domain joined machines.

1. Go to Computer Configuration\Administrative Templates\System\Windows Time Service.
2. Enable NTP Client.
3. Configure Windows NTP Client
   • Double-click Configure Windows NTP Client.
   • Set it to Enabled.
   • Configure:
     • NTP Server: Enter your NTP server(s), e.g.:

       0.pool.ntp.org,0x1

       (The ,0x1 flag means “special poll” mode.)
     • Type: Set to NTP.
     • CrossSiteSyncFlags: Leave default.
     • ResolvePeerBackoffMinutes: Default is fine.
     • SpecialPollInterval: Common value is 3600 (seconds = 1 hour).
     • EventLogFlags: Default is fine.
4. Apply and Close
5. Run gpupdate /force