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Windows Installer 4.5 is available

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

Support for Windows Server 2003 ended on July 14, 2015

Microsoft ended support for Windows Server 2003 on July 14, 2015. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

INTRODUCTION
Microsoft Windows Installer is a component of the Windows operating system. Windows Installer provides a standard foundation for installing and uninstalling software. Software manufacturers can create the setup of their products to use Windows Installer to help make software installation, maintenance, and uninstallation straightforward and easy.

Windows Installer 4.5 is released with Windows Vista Service Pack 2 (SP2) and Windows Server 2008 SP2.
And Windows Installer 4.5 is released as a redistributable for the following operating systems:
  • Windows XP SP2
  • Windows XP SP3
  • Windows Server 2003 SP1
  • Windows Server 2003 SP2
  • Windows Vista
  • Windows Vista SP1
  • Windows Server 2008
Important Windows Installer 5.0 is released with the following operating systems. Therefore, Windows Installer 4.5 does not apply to these operating systems.
Additionally, there is no redistributable for Windows Installer 5.0.
  • Windows 7
  • Windows 7 SP1
  • Windows Server 2008 R2
  • Windows Server 2008 R2 SP1
  • Windows 8
  • Windows Server 2012
  • Windows 8.1
  • Windows Server 2012 R2
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

You are currently using a 32-bit operating system.
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:

DownloadDownload Windows Installer 4.5 now.

Note Check the following table to find which file to choose for your operating system:

Operating SystemFiles to choose from the Microsoft Download Center
Windows XP SP2
Windows XP SP3
For 32-bit: WindowsXP-KB942288-v3-x86.exe
For 64-bit: WindowsServer2003-KB942288-v4-x64.exe
For IA64 Platform: WindowsServer2003-KB942288-v4-ia64.exe
Windows Server 2003 SP1
Windows Server 2003 SP2
For 32-bit: WindowsServer2003-KB942288-v4-x86.exe
For 64-bit: WindowsServer2003-KB942288-v4-x64.exe
For IA64 Platform: WindowsServer2003-KB942288-v4-ia64.exe
Windows Vista
Windows Vista SP1
Windows Server 2008
For 32-bit: Windows6.0-KB942288-v2-x86.msu
For 64-bit: Windows6.0-KB942288-v2-x64.msu
For IA64 Platform: Windows6.0-KB942288-v2-ia64.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.
Virus-scan claim
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.
 
More information

New and improved features in Windows Installer 4.5

The following new and improved features have been implemented in Windows Installer 4.5.

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 one or more of the packages do not install as expected, you can roll back the installation.

Embedded UI handler

You 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 chainer

You 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 resiliency

This feature lets you correct for changes in the FeatureComponent table during supersedence.

Shared component patching resiliency during uninstall

This feature makes sure that the most recent version of a component is available to all products.

Custom action execution on update uninstall

This feature lets an update add or change a custom action so that the custom action is called when an update is uninstalled.

Issues that are addressed in Windows Installer 4.5

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.
MSI 4.5, Installer features, What is new
Properties

Article ID: 942288 - Last Review: 03/05/2015 03:26:00 - Revision: 13.0

Microsoft Windows Installer 4.5, Microsoft Windows XP Service Pack 2, Microsoft Windows XP Service Pack 3, Microsoft Windows Server 2003 Service Pack 1, Windows Vista Ultimate, Windows Vista Enterprise, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Starter, Windows Vista Business, Windows Vista Enterprise 64-bit Edition, Windows Vista Home Basic 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Service Pack 1, Windows Server 2008 Datacenter without Hyper-V, Windows Server 2008 Enterprise without Hyper-V, Windows Server 2008 for Itanium-Based Systems, Windows Server 2008 Standard without Hyper-V, Windows Server 2008 Datacenter, Windows Server 2008 Enterprise, Windows Server 2008 Standard

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