WinXP's Internet time synchronization system prompts synchronization failure resolution

Problem Description
WinXP's Internet time synchronization system prompts synchronization failure, what is the reason?

Solution
When you click the "Update Now" button, the clock should be synchronized immediately. If the operation fails, it may be for several reasons:

1, not connected to the Internet.
2, personal or network firewall to prevent clock synchronization. The Windows Firewall should be able to synchronize the clock.
3, Internet time server is busy, or temporarily unavailable. If this is the case, try syncing your clock later or manually by double-clicking the clock on the taskbar. You can also try another different time server.
4, the time displayed on the computer is very different from the current time of the Internet time server. If the computer's time is more than 15 hours compared to the time of the Internet time server, the Internet time server cannot synchronize your computer clock. To properly synchronize the time, make sure that the time and date settings are close to the current time in the Date and Time Properties in Control Panel.

Notes
1. To open Date & Time, click Start, click Control Panel, and then double-click Date & Time.
2, Internet time server will update the date and time set by your computer.
3, the "Update Now" button is valid only when the "Automatically synchronize with Internet time server" check box is selected.
4, you can manually change the computer clock time in the "Time and Date" tab (on the "Date and Time" in the "Control Panel"). You can also open Date & Time by double-clicking the clock on the taskbar.