Note: Skipping the product key doesn’t means you get a fully activated Windows installation. But what if you want to install and trial Windows 8 before purchasing? Luckily there is a workaround to bypass the product key screen during Windows installation. Microsoft has made it compulsory to provide a product key before proceeding with the installation. Once you decide to activate your installed OS, you will need to change the generic product key to the actual key you purchased.Unlike earlier versions of Windows, you can’t install Windows 10 or 8 without a product key. It's not possible to activate it unless you enter a genuine key purchased from Microsoft. Remember, these keys can only install Windows for evaluation or testing for a short time. Windows 8 Pro with Media Center: RR3BN-3YY9P-9D7FC-7J4YF-QGJXW.Windows 8 standard/non-Pro edition: FB4WR-32NVD-4RW79-XQFWH-CYQG3.The RTM release of Windows 8 was available in the following editions: Windows RT, Windows 8, Windows 8 Pro and Windows 8 Enterprise. Windows 8 Pro with Media Center: GBFNG-2X3TC-8R27F-RMKYB-JK7QT.Windows 8.1 Pro: XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB.Windows 8.1 standard/non-Pro edition: 334NH-RXG76-64THK-C7CKG-D3VPT.Here are generic keys for basic and Pro editions of Windows 8.1: Windows 8.1 has four different editions including Windows 8.1 RT, Windows 8.1, Windows 8.1 Pro and Windows 8.1 Enterprise. Windows 10 Enterprise: NPPR9-FWDCX-D2C8J-H872K-2YT43.Windows 10 Home Single Language 7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH.WIndows 10 Pro: VK7JG-NPHTM-C97JM-9MPGT-3V66T.One is for the standard edition and the other is for the Enterprise edition. There are two generic keys available for Windows 10 at this moment. Generic key for Windows 8 Generic key for Windows 10

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