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JSI Tip 4300. Windows XP frequently asked questions about Windows Product Activation (WPA).

Microsoft Knowledge Base Article 302878 contains the following introduction:

This article contains frequently asked questions about Microsoft Product Activation (MPA). The questions are separated into the following categories:

General questions
How MPA works
Activation and product licensing policies
Technical activation details
Changes to product activation in Microsoft Windows XP SP1
The information that is in this article can also be found at the following Microsoft Web site:
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