If you have an activated Windows 7 or 8 running then you can still upgrade for free, for some reason Microsoft have left their activation servers running. Just download the media creation tool and follow the prompts.
Hello @alimac
Thanks for the information! at least I can upgrade my w7 for free. Do you know if this program could end or there is no end date from MS ?
I've installed LTSC for a couple of friends recently, and after having a bit of mess around with it, I find it quite good, and if you put your internet connection on metered you stop automatic updates until you can check there ok, You should be able to control the updates better though.