Windows 10 fresh install using Windows 7/8 key possible?

Q. Is it true Windows 10 can now be installed using a Windows 7 or 8/8.1 key?

A. Yes but only from build 10565 onwards. Initially for a Windows 10 activation a Windows 10 key had to be used or an upgrade for Windows 7/8.1 had to be performed and only after that upgrade was performed a clean install on the same piece of hardware could be performed which would be automatically activated. With the new change it is now possible to perform a fresh install of Windows 10 and use a Windows 7 or 8/8.1 key.  This is documented at and will make it easier to perform future Windows 10 installations on new hardware.

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