Windows Installer 4.5 has been released
Version 4.5 of the MSI engine brings new features such as
- Multi-Package Transactions that enable developers to seamlessly chain multiple Windows Installer packages
- Embedded Custom UI, so a setup.exe launcher is no longer required as had been the case with the "external UI" functionality
- Patch Uninstall Custom Actions
While MSI 4.0 was only available for (and as part of) Windows Vista, the MSI 4.5 runtime can be redistributed to Windows XP SP2, Windows Server 2003 SP1, or above.
More information:
- Windows Installer 4.5 is now available! (Windows Installer Team Blog)
- What's New in Windows Installer 4.5 (MSDN documentation)
- Windows Installer 4.5 SDK
- Windows Installer 4.5 Redistributable
- Windows Installer 4.5 is available (Microsoft Knowledge Base article 942288)