By Paul Thurrott

A bizarre rumour about Microsoft making sweeping changing to its Product Activation technology in Windows XP Service Pack 1 (SP1) is completely untrue, the company told me today. The rumor, which was started by a small technology enthusiast Web site, had Microsoft changing the product keys for all of its customers using volume licensing. This rumors has since spread across the Internet and been embellished in various ways, including a version I came across Thursday morning claiming that Microsoft was making the change so it could charge licensees yet again for SP1. Not so, says Microsoft.

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source : wininfo