Have you ever wanted to get at some assemblies in an .NET MSI installer, but you either didn't want to do a full install, or there is some condition in the MSI Installer that doesn't let you install it (such as, you need such and such program, version X, and you do not have it on your machine)?
You can do an Administrative installation using MSIEXEC.EXE and the /a command - line switch:
The administrative installation runs only basic actions like InstallFiles in the AdminExecuteSequence table.
You cam also run this, passing the command to start /wait which will block until msiexec.exe completes and returns:
start /wait msiexec /a product.msi TARGETDIR="%TMP%\Product" /qn
Ah! Now I can fire up Reflector and look inside those little boogers!
N.B. A commenter mentions "LessMSIrables" a tool to extract files from MSI's. Here is the actual link: