My Windows 10 I get the following since two weeks.

[RanjitW]

This started after a long term not usage of the machine I think.
"We couldn't check for updates, because you aren't connected to the Internet"

 

[xandros9]

Well, we don't have much information from you here!

Is it actually connected to the internet?

 

[ricardoccnp]

Try to reboot it, it should work after a few minutes

 

[TechFreak1]

I agree @xandros9 we need alot more information... we're not telepathic lol.