2-49Lesson 6 Activating and Updating Windows XP Professional
When you install new operating system components after a service pack has been
installed, Setup requires both the operating system and service pack installation files.
This allows Setup to install the updated version of the component.
To Uninstal a Service Pack
By default, the service pack setup program automatically creates a backup of the files and
settings that are changed during the service pack installation and places them in an unin-
stall folder named \$NTServicepackUninstall$\ in %systemroot%. You can uninstall the
service pack through Add/Remove Programs on Control Panel or from a command line by
running Spuninst.exe from the %systemroot%\$NTServicepackUninstall\Spuninst\ folder.
Note If you installed a service pack without creating a backup, you cannot uninstall the ser-
vice pack.
Practice: Configuring Automatic Updates
In this practice, you will configure Automatic Updates to download and install critical
updates automatically.
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