Although Microsoft does not support Windows XP updates any more, I'm sure there are still many users using it due to their personal habits or job demands. Therefore, XP's product keys may be necessary even now. Here lies the most comprehensive list of Windows XP product keys.
The following CD keys are official and original from Microsoft, mainly used for Windows XP Professional Service Pack 2/3 VOL/VLK system images, which are the easiest ones to find on the Internet.