after enable "Set time automatically", when will the time be synchronized?

You can check the Task Scheduler and the Event Viewer to see if there is any information about why the task to sync the time is not triggered when you power on your computer.

-Task Scheduler

1-Click on Start, search for Task Scheduler and click on that

2- Go to:

Task Schedulers Library > Microsoft > Windows > Time Synchronization

3-Then check the "Last run time" to see if the task was triggered when you power on the computer and the "Last run result" to see if the task was completed with success

-Event Viewer

1-Click on Start, search for Event Viewer and click on that

2-Go to:

Applications and Services Log\Microsoft\Windows\Time-Service\Operational

3-Then check the events to see if there was any error when the task tried to sync the time

You can see more information at this link.

https://learn.microsoft.com/en-us/windows-serve...

If you are using a firewall or a proxy, check if you are not blocking the port "UDP 123", this is the port that the Windows Time Service uses to sync with the internet.

Hi, David. I'm Robinson, and I’m happy to help you today.

The time should be synced every time you power on your computer.

Please provide some more details to help identify what is causing the problem. Do you have any third-party antivirus? Did you make any changes to your computer before the problem started?

Did you try to sync the time manually? Did you receive any error messages?

1-Click on Start then click on Settings

2-Click on Time & Language then click on Date & Time

3-Make sure your "Time zone" is set correctly, then click on the "Sync now" button under "Additional settings"

I'm sorry, I'm running out of possible fixes and solutions. Since this is an open forum, let's see if another member of the community has an alternative solution to the issue.

All status are good by "Task Schedule" and "Event Viewer".

"The operation completed successfully. (0x0)" found by "Task Schedule".

Because it still can work when the time lag over 2 days, I think there is no problems about firewall or internet access port or any other situation setting.

Hello, Robinson,

We found 1 system, the time will be late 1 hour after 1 day OFF. So, we enable OS "Set time automatically" and "Set time zone automatically". But the time is still wrong every time power ON.

the Internet and browser work fine. Manual sync also work fine. But system time is still wrong after power ON. We need to sync time manually always after power ON.

re-install OS not work. no antivirus installed.