Upgrade is simply means an improvement or replacement of an existing service or software. Microsoft decided to close free channels for user upgrades who are using Windows 8.1 Operating System(OS) to new Windows 10 OS. Microsoft closed its main stream for windows 8.1 update last week, however there were a chance to do so before 16 January 2018 through Microsoft accessibility. Microsoft ended mainstream support for Windows 8.1 on January 9, five years after the operating system’s launch.
No more free upgrades for windows 8.1
But this does not mean that you cannot still use the OS, probably you can but free upgrades to windows 10 for free is over since last two days 16th January 2018.
