Windows Installer Executable –MSIEXEC.EXE

The executable file Setup.exe is a bootstrap program. That is, it performs a few preliminary tasks and then calls the Windows installer program, Msiexec.exe, to perform the actual installation. So msiexec.exe is the Windows Installer executable program that interprets packages and installs products. More information on how this works can be found at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/bootstrapping.asp.

Fixes for common errors:
SMS: Msiexec.exe Cannot Process an MSI File - http://support.microsoft.com/default.aspx?scid=KB;en-us;q263402
OFF: Error Message: MSIEXEC Caused an Invalid Page Fault in MSIEXEC.EXE at ####:00400288 - http://support.microsoft.com/default.aspx?scid=KB;en-us;q217688

When used with the msiexec.exe /v switch, it installs, repairs and removes software according to instructions contained in .MSI files.

Safe

Microsoft