Re: Follow Up: MSI Upgrade

Robert E. Smith jr. wrote:

> Hi,
> 
>  
> 
> I think I understand now what needs to be added to the MSI.  Why not add 
> some of the version numbers for previous packages, instead of admins 
> having to go through the transform process each time?
> 
>  
> 
> Sorry for any confusion.
> 
>  
> 
> Bob
> 

Now I am confused.  The reason CMU has to apply a transform for each
release is to add the customizations that are required for the CMU
installation.

My understanding is that an MSI will not uninstall a previous version
unless the deployment either by GPO or msiexec.exe specifically 
instructs the installer engine to do so.  From msiexec.exe this is
done by specifying

   msiexec.exe /fvomus <msi-name>

The package entries in the MSI leave the version number range open
so that you can successfully upgrade and downgrade.  We will not change
the Product ID for the MSI until such time as there is a significant
change in the file hierarchy.

Jeffrey Altman

P.S. - I'm sure Asanka will correct me if I have gotten something wrong.