The theory concerning HWID is for ensuring that the running system isn’t being used for any other machine. And if the two numbers of HWID differ, then there will be a shutdown of the operating system until Microsoft proceeds to reactivate the product. It compares it to the first or original one to ensure that the running system is still operating on the same machine. This operating system generates another number of HWID. HWID tends to identify the hardware parts that the system is using, and there is a communication of this number to Microsoft. It happens as a part of the system of product activation. There is a generation of a unique type of HWID number when installing the operating system is taking place. HWID stands for hardware identification, and it is a security measure utilized by Microsoft during the activation of your windows operating system.