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The Microsoft WindowsInstaller is an application installation and configuration service. WindowsInstaller-KB893803-v2-x86.exe is the redistributable package for installing or upgrading Windows Installer. This revised package replaces the previously released redistributable package named "WindowsInstaller-KB893803-x86.exe" and addresses the issue discussed in KB Article 898628: Windows Installer fails silently after you upgrade to Windows Installer 3.1.
For more information about the Windows Installer 3.1 redistributable, see KB Article 893803: Windows Installer 3.1 is now available.
Note for users of previous versions of the Windows Installer: The new Windows Installer Redistributable follows a new naming convention that contains a Knowledge Base reference so it is easier to identify which version of the Windows Installer will be installed. The previous naming convention, INSTMSI.EXE, will no longer be used. you can free download Microsoft Windows Installer 3.1.4000.2435 Redist now.
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