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Windows Installer is a utility application in the Windows operating systems that is used for installing software/applications. It provides a means to install software on a computer that complies with the architectural framework of Windows.
Windows Installer was previously known as Microsoft Installer.
Windows Installer is primarily designed for software publishers that design and develop software/applications for Windows. Typically, each third-party software is bundled with the Windows Installer. This binding allows the correct installation and configuration of a third-party application on a Windows framework. Windows Installer has been released in different packages that generally include the following:
Windows Installer has an ".msi" extension and usually includes an application for uninstalling the program/software. The uninstaller is usually invoked from the Control Panel.