As promised yesterday during the media event, microsoft has made available for download the technical preview build of its upcoming windows 10 operating system. even though the preview is intended for enthusiasts and it pros, anyone can install and experience the preview build for free.. Windows 10 download link and product key. windows 10 product key and activation: how to find it and how it works get the latest working free product key, serial key and serial number for windows 10 full 2015. windows 10 technical preview product key [official] windows 10 activator full crack 100% working information: windows. License cost: the technical preview of windows 10 is free for all users. a product key is provided at the end of this article which can be used by anyone to install windows 10. expiry: build 10041 of windows 10 technical preview is scheduled to be expired in october 2015. build 10041 expires october 1, 2015, at 4:59 pm..
