My Windows 10 tablet does that.
Is your laptop in tablet mode?

Indeed it did work, but in one example the "Allow other network users to control or disable the shared internet connection" in the Sharing tab was checked, whereas in the other example it was not. ...

I did this:
Step1.
http://lifehacker.com/turn-your-windows-10-computer-into-a-wi-fi-hotspot-1724762931

and it worked, except no internet access. Then I did this:

Step2.
Share an Internet...