title: Cannot install .msi package silently
body: <p>I have an Office 2007 add-in (developed using Visual Studio 2005 Tools for Office Second Edition) which has been packaged into an .msi file, using the Setup project in Visual Studio 2005</p>
  
  <p>The problem is that when the users install the package themselves by using Next->Next->Finish then everything works normally, but when I try to install it using the domain administrator silently on all machines (In this case we have hundreds of users) then it doesn't work properly (although it installs normally) Following is the command used to install the .msi package silently</p>
  
  <pre><code>msiexec /fa "solution.msi" ALLUSERS=1 /qb!
  </code></pre>
  
  <p><a href="http://www.box.net/shared/07la27q84l" rel="nofollow noreferrer">This image</a> shows how the system registry is populated at install time to connect our solution to Office2007</p>
  
  <p>Could there be any previous versions of the solution that might be conflicting with our silent install ? or might there be another problem ?</p>
  
  <p>Could there be any problems relating to CASPOL security which could be failing when I install this silently ?</p>