| Web Platform Installer | |
| Developer: | Microsoft |
| Released: | [1] |
| Discontinued: | yes |
| Latest Release Version: | 5.0 |
| Operating System: | Windows XP SP3 and later Windows Server 2003 SP2 and later |
| Platform: | x86-64, IA-32 |
| Size: | 4.5 MB |
| Language: | English, German, Japanese, French, Spanish, Italian, Korean, Chinese Traditional, Chinese Simplified, Czech, Polish, Portuguese-Brazil, Russian, Turkish |
| Language Count: | 14 |
| Language Footnote: | [2] |
| Genre: | Package management system |
| License: | Freeware |
Web Platform Installer (Web PI) was a freeware, closed-source package management system that installs non-commercial development tools and their dependencies that are part of Microsoft Web Platform, including:
The ability to install third-party software was added in version 2.0, released September 24, 2009.[3], Web PI can install 82 titles.[4] Web PI 2.0's options are populated dynamically at runtime from Microsoft's servers, allowing installation options to be updated without the need to download newer versions of the Web PI itself.[5]
On July 7, 2010, Microsoft announced Web PI 3 which includes WebMatrix, a new set of integrated tools for web development. Web PI 3 installs additional tools for web development including IIS Developer Express, SQL Server Compact and DotNetNuke.
Web PI features an offline mode where products can be downloaded to a local cache on a machine where internet access is available and then use these cached files on a different machine later.[6] However, Web PI is still not usable in environments where Internet connectivity and local administrator privileges are mutually exclusive (i.e. a given process can either authenticate through a transparent proxy, or can have High or System integrity level, but not both).
The Microsoft Web Platform Installer (WebPI) has been retired since July 1, 2022.[7]