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Windows Installer 4.5 is available
Article ID: 942288 - View products that this article applies to.
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 now available as a redistributable system component for the following operating systems:
Installation of the Windows Installer 4.5 package requires a reboot to successfully update the required binaries.
Download the installer for all versions of WindowsThe following file is available for download from the Microsoft Download Center:
Download the Windows Installer 4.5 Redistributable package now.
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For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591Microsoft scanned this file for viruses. Microsoft used 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 the file.
(http://support.microsoft.com/kb/119591/ )How to obtain Microsoft support files from online services
New and improved features in Windows Installer 4.5The 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.
Issues that are addressed in Windows Installer 4.5The issues present in earlier versions of Windows Installer that are addressed in Windows Installer 4.5 are as follows:
Article ID: 942288 - Last Review: June 6, 2011 - Revision: 5.0