Most pieces of commercial software come with some form of protection to deter unauthorized copying and installation. Although software makers use different methods to achieve this goal, one common approach involves asking the user to type in a product key or serial number, which is the case for both Microsoft Windows and Office 365. This string of letters and/or numbers is a unique identifier that the software decodes to verify that your copy is legal. It’s required to authorize the software’s installation and your eligibility for product support, so it’s…
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