Published: November 25, 2003
Category: Windows Installer | Personal Blog
Author: Rob Mensching
Site: Rob Mensching Openly Uninstalled (blogs.msdn.com)

Summary
[Author Extract] Let's talk about MSI files. First, MSI files got their name back when we thought Darwin was going to be called the "Microsoft Installer". Thus the file extension MSI made some sense. Unfortunately, it so late when the name changed to "Windows Installer" that it wasn't really feasible to safely change the extension that everyone had come to know and love as MSI.

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About the Author
Rob Mensching has worked in the setup domain at Microsoft for over seven years. He started as an intern on the Windows Installer then worked on Office XP and Office 2003 setup and now Windows Vista setup. Rob is also the project lead for the WiX toolset.