Can I have one computer on my Windows home network excluded from the Internet?

[BusterE]

This whole thing is intriguing. As I already wrote, "Win10 support ended almost a month ago and I just received an update, with the whole reboot thing."

So today, in order to avoid some tasks Marilyn wanted me to do, I checked SECURITY in this old tri-core television computer running win10 with no chance of an upgrade. I was surprised by what I found:

1. Last scan 11/11/2025 7:38PM

2. Security Intelligence is up to date 13/11/2025 4:12PM

And I've already mentioned I had an update that took a while on this computer.

Worth checking on your own win10.

[buster]

Well it's Nov 18, and Microsoft did an unrequested 'maintenance' download and update, and then a reboot at 5:32 pm. 

This is my Win10 laptop.

[ssfc72]

Thanks Harry, for the info.
I have Win 10 an my old 13" HP notebook. I rarely use it, so I should probably leave it pluged in running overnight, to see if it updates.