If you have installed the free Windows 10 upgrade, the unique key is associated with your Microsoft account and can be re-activated after reinstalling Windows 10. Windows 7, Server 2008, Vista, Server 2003, XP, 2000, ME, and 98 Product Key: xxxxx-xxxxx-xxxxx-xxxxx-xxxxx Windows 95 and NT Product Key: xxxxx-xxx-xxxxxxx-xxxxx Where do I find the CD key, product key, or unique number? Microsoft Windows product keyįor computers, if you have an OEM PC (e.g., Dell or Hewlett-Packard), the Windows product key is found on the side or bottom of the computer. Below, are the formats of the Microsoft Windows product keys. After Windows is installed on a computer, it prompts you for an activation key to verify your computer has a legitimate copy of Windows.

In this example, the last four sets of letters and numbers are hidden to protect the unique key. On an OEM laptop, it may be on the bottom of the laptop, or underneath the laptop battery. Usually, it is on the side or bottom of an OEM desktop computer. A product key should not be referred to as a serial number to help prevent confusion with a computer or hardware products serial number.Ībove is an example of the Microsoft Windows XP Home Edition product key.

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