However, problems can arise when users start replacing or adding hardware components - such as motherboards, sound cards, CD-R drives, Ethernet adapters - because these will generate new HWIDs. The theory behind HWID is to ensure that the operating system is not being used on any device other than the one for which it was purchased and registered. The HWID identifies the hardware components that the system is utilizing.Īt every reboot the operating system will generate another HWID number and compare it to the original to make sure that the operating system is still running on the same device. As part of the Product Activation system, a unique HWID number is generated when the operating system is first installed on a piece of hardware.
Short for H ard w are Id entification or hardware ID, an HWID is a security measure used by Microsoft upon the activation of the Windows operating system.
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