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INTRODUCTIONMicrosoft 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.
Important Windows Installer 5.0 is released with the following operating systems. Therefore, Windows Installer 4.5 does not apply to these operating systems.
How to obtain Windows Installer 4.5 redistributableBefore you download this redistributable, you must determine whether you are running a 32-bit or 64-bit version of Windows. Automatic version detection resultNote 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
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 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:
References Need more help?Where is the Windows Installer file?The Windows Installer Cache is used to store important files for applications that are installed by using Windows Installer. By default, this cache is located in the c:\windows\installer folder, and it should not be deleted.
Where is the installer folder?The C:\Windows\Installer folder contains Windows installer cache, it's used to store important files for applications installed using the Windows Installer technology and should not be deleted.
What is Windows Installer on my computer?Microsoft Windows Installer is a component of the Windows operating system. Windows Installer provides a standard foundation for installing and uninstalling software.
How can I get Windows 10 installer?To use the media creation tool, visit the Microsoft Software Download Windows 10 page from a Windows 7, Windows 8.1 or Windows 10 device. You can use this page to download a disc image (ISO file) that can be used to install or reinstall Windows 10.
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