Should be until end of lifetime of product.

But then the confusion is win10 would be based on rolling release so there is no clear way to define its life cycle.

Could it be... forever?

do reset factory from windows.... when pc starts up go windows update. it will then say you can upgrade to windows.... then will download.

smooth sailing from there 

Hi all,

My experience on Upgrading to Win 10.

1. Using the normal Windows Update but no luck...indicate Failed error code 80240020.

2. Tried delete the Sofware distribution folder files and command prompt to start download. Windows 10 downloading but failed again.

3. Use the Media Creation Tool and try create a USB bootable installer but can not detect my flash drive.

4. Change to Upgrade this PC and Something Happened pop out. haizzzz.

Now after reading this forum.. I will try to change the Language and see how it goes.

If it is still not working then I bring my laptop to Thunder Match and see how much they charge for the upgrading service.

i have the same issue, and finally success yesterday. here what i did for my Win8.1.

1. download the ISO to the PC using the mediacreation tools.
2. Make sure check your windows version is the same as what ISO you're downloading.
3. install and use ISO opener and extract to a folder at your pc.
4. run setup from the folder.
5. if you encounter it ask for Product Key, meaning you downloaded a wrong version.
6. during install it will check for uncompatible software and it will ask you to remove it. for my case i have to uninstall symantec antivirus.