Microsoft updates WGA to find counterfeit Windows XP Pro

Microsoft Corp., tacitly acknowledging the continued popularity of Windows XP, said Tuesday it was updating the operating system's anti-piracy technology to detect illegal copies installed with newly-stolen or faked product keys, or with new activation cracks.

In an entry to a company blog, Alex Kochis, senior product manager for Microsoft's Windows Genuine Advantage (WGA) program, spelled out the update to WGA Notifications. That's the antipiracy component that provides the messages and other on-screen prompts when the other half of WGA, dubbed Validations, detects an illegal copy of the operating system.

"This update includes the latest validation information, including recently stolen or misused product keys and other information," said Kochis, who elsewhere in the blog noted that the "other" category included "attempts to circumvent product activation." Such circumvention methods, called "cracks," are popular downloads on file-sharing sites that also feature pirated software.

The update applies only to Windows XP Professional, added Kochis.

Although Microsoft tried to put a stop to Windows XP sales last year -- and will be shifting it into a more limited support plan next month -- it has relaxed its rules several times since then as customers have continued to demand new PCs with XP rather than Vista. Windows XP Professional is the only version that Microsoft allows users and computer sellers to "downgrade" from Vista.

The company has also acknowledged that Windows XP Professional is preferred by pirates over Vista by wide margins, and last year promised it would roll out a campaigns during 2009 to warn people that XP is widely counterfeited.

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