Win7/Win8.1 genuine serial number how to upgrade free win10

Microsoft Windows 10 free upgrade plan has ended, but after this, some users can still activate Windows 10 through Windows 7/Windows 8.1 valid genuine serial number. The user also tried a PC that had not previously installed Windows 10 and the result was activated.
At present, Microsoft has not confirmed or denied whether it will cancel this mechanism, but guessing it will take some time.
Windows7, Windows 8.1 Free upgrade to Windows10 is 1 year, but now foreign media ZDNet said that even after July 29, many users install Windows10 system, only need to enter the old version of Win7, Win8.1 valid key You can activate Win10.









Whether the user has installed Win10 before, or has never installed Win10 before, Win10 and Win8.1 product keys can be used to activate Win10 on the device. ”

Mr. Jo Foley, a foreign media ZDNet editor, asked Microsoft about this and received a spokesperson's statement:
"The first time a user upgrades to Win10, they need to type the Windows 10 product key. Users who have previously upgraded and installed the Win10 system on the PC can successfully activate the digital license rights when reinstalling the Win10 system.
It is unclear whether Microsoft will and will block this "vulnerabilities".
Now you can use the assistive technology, you can also use this program to upgrade from Windows 7/8.1 to Windows 10 for free. This is the official program, and the end date has not been announced.