How to obtain Windows Installer 4.5 redistributable
Before you download this redistributable, you must determine whether you are running a 32-bit or 64-bit version of Windows.
Automatic version detection result
Note If the auto detection result is not displayed on your screen, view How to determine whether a computer is running a 32-bit version or 64-bit version of the Windows operation system.
Download Windows Installer 4.5 redistributable
The following file is available for download from the Microsoft Download Center:
[Asset 4009805]Download Windows Installer 4.5 now.
Note Check the following table to find which file to choose for your operating system：
Files to choose from the Microsoft Download Center
Windows XP SP2
For 32-bit: WindowsXP-KB942288-v3-x86.exe
Windows Server 2003 SP1
For 32-bit: WindowsServer2003-KB942288-v4-x86.exe
For 32-bit: Windows6.0-KB942288-v2-x86.msu
Installation of the Windows Installer 4.5 package requires a reboot to successfully update the required binaries.
For more information, view How to obtain Microsoft support files from online services.
Microsoft scanned this file for viruses, using the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to it.
The following new and improved features have been implemented in Windows Installer 4.5.
Multiple package transactionIn 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 one or more of the packages do not install as expected, you can roll back the installation.
Embedded UI handlerYou can embed a custom user interface (UI) handler in the Windows Installer package. This makes a custom UI easier to integrate. You can also invoke an embedded UI handler from the Add or Remove Programs item in Control Panel. Or, you can invoke an embedded UI handler during a Windows Installer repair process.
Embedded chainerYou can use the embedded chainer to add packages to a multiple package transaction. You can use an embedded chainer to enable installation events across multiple packages. For example, you can enable install-on-demand events, repair events, and uninstall events across multiple packages.
Update supersedence resiliencyThis feature lets you correct for changes in the FeatureComponent table during supersedence.
Shared component patching resiliency during uninstallThis feature makes sure that the most recent version of a component is available to all products.
Custom action execution on update uninstallThis feature lets an update add or change a custom action so that the custom action is called when an update is uninstalled.
The issues present in earlier versions of Windows Installer that are addressed in Windows Installer 4.5 are as follows:
The SeBackupPrivilege user right was missing in the Windows Installer service. This lack hindered any custom actions that needed this user right.
Some case-sensitive service-name comparisons in the InstallValidate action resulted in an unnecessary "files in use" message in Windows Vista.
When you uninstalled an update that added a new component, the component was also uninstalled. This occurred even if the component was shared by other products.