Greetings! =)

I have an old Laptop here with Windows 7 that, unfortunately, kept the clock behind constantly, so I looked for a solution and found this...

"NetTime is a Simple Network Time Protocol (SNTP) client for Windows 95/98/Me/NT/2000/XP/Vista/7/8/10 and Server 2003/2008/2012/2016. (32 bit and 64 bit operating systems are both supported)

If you're looking for a program to keep your system time accurate, you've just found it!

Its main attributes are:

- Free
- Open Source
- Small
- Easy to Install and Use
- And most important: Reliable

NetTime was originally written by Graham Mainwaring in 1997 with an open source release made in 1998. Graham made a number of updates to the program until he lost interest and finally abandoned the project officially on the 1st of July 2004.

The NetTime project has been resurrected by myself, Mark Griffiths, and I'm now making an updated version available here": https://www.timesynctool.com/

Perhaps many of you already know this solution, but there is always someone who doesn't know, so I leave this tip here for everyone!

Best regards!

Given how old that machine is, I wouldn't be surprised if it needed a new CMOS battery.

Precisely! But sometimes it's tedious to look for the battery, buy it, change it and etc...
NetTime ends up being a simple and quick solution. =)

???

Windows 7+ has already built-in functionality to synchronize the system clock with the Internet.

Click on the clock, select the"Internet time" tab and either use the default settings or any NTP server of your choice.

Yeah, I'm confused, hasn't NTP time sync been a thing since at least 95+?

Hell, most countries still have a Master Clock you could call.

I tried that... But it worked until the day Uncle Bill decided to cut support for Windows 7. Now when I click to update I get a big network error or something like that, in other words this won't work on my end. As the saying goes: "Shit happens."

You may want to check your disabled services as I'm pretty sure it worked recently on my end. I believe the serice name is Windows Time.
Sorry that I cannot confirm since I don't have any Windows 7 computer at the moment.

Try this:-

1. Control Panel -> Services -> Enable "Windows Time" service.

2. If you need a Windows Firewall "Allow" rule, create one that allows port UDP 123.

3. Click on the clock in the System Tray -> Change Date & Time Settings -> Internet Time -> Change Settings, and you can change your server (which can also be to your local Internet router if that has a Time Server built in and syncs itself online).

Thank you everyone for your help! =D

I found the root of the problem, in fact, the "Windows Time" service was activated, but, it was trying (and failing) to synchronize the time with "time.windows.com", and all the other options on the list were also failing on update then I typed "pool.ntp.br" and now it's syncing like a charm!

Me in my thoughts: "I definitely didn't remember that. ¬¬"

Anyway, I leave this second tip for my friends in Brazil!

In that case, you need to specify a different time server.
I believe, the standard entry is "time.windows.com".
I changed mine long ago to something different (de.pool.ntp.org)

The website of the NTP Pool Project can help you choose a suitable server.

edit: ninja'd ;-)

Exactly... That was the problem! Changing the server solved the problem. =)