I'm not an IA expert, but what you just described sounds like the PackageCode 
not the UpgradeCode or the ProductCode.
 
I suggest reading the MSI SDK doco topics and looking at your built MSI in 
Orca.  From there connect the dots with the tool of your choice  ( is, ia, wix, 
wise, vdproj et al ).

---
Christopher Painter, Author of Deployment Engineering Blog
Have a hot tip, know a secret or read a really good thread that deserves 
attention? E-Mail Me

--- On Sat, 5/7/11, Rune Moberg <jjfl...@gmail.com> wrote:


From: Rune Moberg <jjfl...@gmail.com>
Subject: Re: [WiX-users] FindRelatedProducts does not find any of my old 
installers
To: "General discussion for Windows Installer XML toolset." 
<wix-users@lists.sourceforge.net>
Date: Saturday, May 7, 2011, 4:30 AM


On Fri, May 6, 2011 at 5:51 PM, Christopher Painter
<chr...@deploymentengineering.com> wrote:
> The registry key under Uninstall is going to be the ProductCode not the 
> UpgradeCode.

Ah.

> Do you have a copy of your old MSI so you can look at it in Orca to see if it 
> has an Upgrade Code Property?

I have an archive of the previous versions, yes...

And now I understand why ProductCode and UpgradeCode have been confusing me.

In IA, the UpgradeCode is known as the "Revision Code" and the tooltip
helpfully explains that "The IDE automatically changes the revision
code each time you do a new build".

I have at least three different installers out in the wild that I had
assumed shared the same UpgradeCode. Of course IA's phrasing confused
me when I first started with WiX, because something was clearly amiss.

There are days when it pays off to not get out of bed at all. The day
when I decided "IA is the installer for me" was clearly one of those
days. Can anyone please lend me a time machine?

Thanks Christopher for pointing me in the right direction. I will have
to dabble with this over the weekend and see if I can come up with
something not too clever.

-- 
Rune

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