In Windows XP, you can update your system against various threats prevailing on the Internet. And far most important threat is virus. To combat this problem, Windows XP introduces the concept of Automatic Updates. Automatic Updates feature of Windows XP routinely checks the Windows Update Web site for high-priority updates that can help protect your computer from the latest viruses and other security threats. These updates can include security updates, critical updates, and service packs. Depending on the setting you choose, Windows automatically downloads and installs any high-priority updates that your computer needs, or notifies you as these updates become available.

When you connect to the Internet, Windows sends data to the Windows Update Web site about the way your computer is set up so the service can determine which updates your computer needs. Windows does not use your name, address, e-mail address, or any information that can be used to identify you or contact you.

It makes no difference whether you use a dial-up or broadband connection; important updates are downloaded behind the scenes and do not interfere with other downloads. If you disconnect from the Internet before updates are fully downloaded, nothing is lost. The download process will continue the next time you connect to the Internet.