To access update services such as Windows Update or Automatic Updates, you must have genuine Microsoft Windows software installed. If you are a home user or a business user and do not have a volume license agreement with Microsoft, you may be the victim of software piracy. If your computer came with Windows XP pre-installed, contact your reseller or the original equipment manufacturer to verify that you were sold genuine Windows software.
To report suspected software piracy, visit the following Microsoft Web site:
To acquire a valid retail Windows XP product, visit your local retailer, or visit the following Microsoft Web site:
If you are outside the United States, contact the Microsoft subsidiary for your area. To locate your subsidiary, visit the following Microsoft Web site:
If you are a Microsoft volume license customer and you have licenses for Windows XP Professional but you set up the computer by using a key that is not valid, click the following article number to view the article in the Microsoft Knowledge Base:
How to change the Volume Licensing product key on a Windows XP Service Pack 1-based computer