The Microsoft® Windows® Installer (MSI) is the application installation and configuration service for Windows. Version 4.5 of the Windows Installer has several new features, including:
- Multiple Package Transaction: In a multiple package transaction, you can create a single transaction from multiple packages. In a multiple package transaction, a chainer is used to dynamically include packages in the transaction. If any of the packages do not install as expected, you can roll back the installation.