The Windows 8 activation key, also known as the product key, is inserted into the Windows 8 Setup software after successful download of the software. This key provides the necessary verification that Windows 8 has been legally purchased.
After purchasing Windows 8, the Windows online website provides the necessary setup software. After downloading the product, the activation key serves as the software’s verification and commencement code.
The activation key is a 25-character code that is found on the receipt email after purchasing an online copy of Windows 8 or on the DVD packaging of the setup software purchased in a retail location.