Install XP Service Pack 2 to better defend against viruses, worms, and hackers.

Microsoft Windows XP Service Pack 2 (SP2) provides new proactive security technologies for Windows XP to better defend against viruses, worms, and hackers. In addition to a more robust security infrastructure, SP2 improves the security configuration options of Windows XP and provides better security information to help users faced with security decisions.

DO NOT CLICK DOWNLOAD IF YOU ARE UPDATING JUST ONE COMPUTER: A smaller, more appropriate download is now available on Windows Update. The best way to ensure you get Windows XP Service Pack 2 is by turning on the Automatic Updates feature in Windows XP today.