Microsoft requires that your copy of Windows is legitimate before you can obtain programs from the Microsoft Download Center or receive software updates from Microsoft Update. Microsoft's online process that performs this validation is called the Genuine Advantage Program. At no time during the validation process Microsoft is requesting your credit card information.
In fact, Microsoft does not collect information that can be used to identify you such as your name, email address, or other personal details.
To learn more, read the Genuine Microsoft software program privacy statement.
To learn more about the program in general, see Genuine Windows: frequently asked questions.
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