The official download link of Web Platform Installer (Web PI) https://www.microsoft.com/en-us/web/downloads/platform.aspx is broken for a few days. If you search via google or Bing, you might essentially get a broken link like me.

Fortunately Microsoft IIS site has an alternate download link : https://www.iis.net/downloads/microsoft/web-platform-installer

English: x64 / x86