Microsoft Web Platform Installer 5.0

The Microsoft Web Platform Installer (Web PI) is a free tool that makes getting the latest components of the Microsoft Web Platform, including Internet Information Services (IIS), SQL Server Express, .NET Framework and Visual Web Developer easy. The Web PI also makes it easy to install and run the most popular free web applications for blogging, content management and more with the built-in Windows Web Application Gallery.

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Why you’ll love it.

It’s Free

The Web PI is a free download with no strings attached. We don’t know about you, but we definitely like free.

It’s Tiny

Weighing in at under 2 megabytes, the Web PI is the fastest way to get the components that make up the Microsoft Web Platform.

It’s Smart

Installing Web Apps or updating the Microsoft Web Platform, Web PI’s improved validation support ensures everything just works.

It’s Up-To-Date

Whether you're updating or installing components, Web PI always includes the latest version of the Microsoft Web Platform.

It’s Cultural

Available in 14 different languages. Choose your language and if a component is available in that language, Web PI will ensure you get it.

It’s App-tastic

Popular, free and ready to install Web Apps including Umbraco, WordPress, Acquia Drupal, SugarCRM, and more!

See what’s inside.

Web Server

Install the latest version of IIS, including latest IIS Web extensions like IIS Media Services.


Install the latest version of the .NET Framework. This includes everything you need to work with ASP.NET.


Install the latest version of SQL Server 2008 Express. This includes both the database engine and tools.


Install the latest version of Visual Web Developer Express, Our full featured free web development tool.

Web Apps

Install free popular ASP.NET and PHP web apps such as Umbraco and WordPress. Browse the Windows Web Application Gallery


Web PI also includes the latest community version of PHP for Windows and a trial version of Expression Web 3!

Extra and Goodies

Help and Support

Once you have completed your platform installation, you can immediately start developing your Web solution. Support for Web Platform Installer can be received by visiting the Web Platform Installer Forum to discuss issues and suggestions.