I have a Windows 10 machine.
It is a old Windows 10 Build. The build is 1709.
In the past this machine did have Internet access, not this host can surf on Internet.
I would install Windows Update to improve security of this PC, but they fails.
The error message is:
Your device is at risk because it's out of date and missing important security and quality updates. Let's get you back on track so Windows can run more securely.

How can I fix? Is too old WIndows 10 Build to get Windows Update?
Thanks