Before downloading, check your current version. already includes Windows Installer 4.5 by default.
Windows Installer (MSI) 4.5 introduced several key features that improved software deployment on Vista:
If you are running or Vista SP1 , you will need to update to version 4.5 to run many newer programs. Download Windows Installer 4.5 for Vista 32-bit windows installer 4.5 download for vista 32 bit
Better handling of updates for shared components between different programs.
Enhanced ability to diagnose and repair corrupted software installations. Do You Already Have It? Before downloading, check your current version
Allows developers to chain multiple setup packages into a single "atomic" transaction. If one fails, the entire installation can be rolled back safely.
The official redistributable package is provided by Microsoft as an (Microsoft Update), which is installed using the Windows Update Stand-alone Installer. Windows Installer 4.5 is available - Microsoft Support Download Windows Installer 4
If you have , you likely don't need to download it unless your system files are corrupted.
