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2. Microsoft Product Activation - Wikipedia

   en.wikipedia.org/wiki/Microsoft_Product_Activation

   In this case, the copy of Windows installed does not use the product key listed on the certificate of authenticity, but rather a master product key issued to OEMs called a System Locked Pre-installation (SLP) key. On each boot, Windows confirms the presence of specific information stored in the BIOS by the manufacturer, ensuring the activation ...

3. Product key - Wikipedia

   en.wikipedia.org/wiki/Product_key

   Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters.

4. Product activation - Wikipedia

   en.wikipedia.org/wiki/Product_activation

   A product key is required to proceed and use Windows 95. In one form, product activation refers to a method invented by Ric Richardson and patented (U.S. patent 5,490,216) by Uniloc where a software application hashes hardware serial numbers and an ID number specific to the product's license (a product key) to

5. System Locked Pre-installation - Wikipedia

   en.wikipedia.org/wiki/System_Locked_Pre-installation

   System Locked Pre-installation (SLP), also referred to as OEM Activation, is a product activation procedure for Microsoft Windows used by major OEMs of laptops and pre-built PCs wherein a Windows product key is added and locked to the machine's firmware before mass distribution. SLP product keys cannot be moved to other machines.

6. Windows 10 - Wikipedia

   en.wikipedia.org/wiki/Windows_10

   This build treated Windows 7 and Windows 8/8.1 product keys as Windows 10 product keys, meaning they could be entered during installation to activate the free license, without the need to upgrade first to "activate" the hardware with Microsoft's activation servers. [99]

7. Volume licensing - Wikipedia

   en.wikipedia.org/wiki/Volume_licensing

   Product key on a certificate of authenticity for Windows Vista Home Premium Microsoft has been engaged in volume licensing since its inception, as the enterprise sector is its primary market. With the release of Windows XP in 2001, Microsoft introduced Microsoft Product Activation , a digital rights management (DRM) scheme to curb software ...