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Upgrading an IIS Server to IIS 6.0

Updated: August 22, 2005

Applies To: Windows Server 2003, Windows Server 2003 with SP1

You can move Web sites and applications to Internet Information Services (IIS) 6.0 in two ways. Upgrading is installing the Microsoft® Windows® Server 2003 operating system and IIS 6.0 on an existing server running the Windows NT® Server 4.0 operating system and IIS 4.0 or the Windows® 2000 Server operating system and IIS 5.0. Migrating, on the other hand, is installing Windows Server 2003 and IIS 6.0 on a new server and then moving, or reinstalling, existing Web sites and applications to that server. Both processes involve minimal outage of service to users that access the Web sites and applications, while retaining the majority of the original configuration settings and fully preserving the content of the Web sites and applications.

You can use the Web Platform Installer (Web PI) to easily install IIS, and applications that run on IIS. The Web PI is a free, lightweight tool that lets you install IIS and related technologies such as ASP.NET, SQL Server Express, Visual Web Developer, other popular Web applications, and more. Because the Web PI installs the latest versions of available Web Platform offerings, with just a few simple clicks you can download and install any new tools or updates. To learn more about the Web PI, see Learn more and install the Web PI.

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