Was the value of ALLUSERS property different between the two installations?
Per-machine installations and per-user installations are basically in
separate "worlds" for Windows Installer and shell components such as ARP
show a combined view of both worlds.

Most programs tend to be either per-user or per-machine, and most of the
time you probably don't want to give the user a choice.

-----Original Message-----
From: David Louis [mailto:clientlo...@gmail.com] 
Sent: Tuesday, July 20, 2010 10:35 AM
To: wix-users@lists.sourceforge.net
Subject: [WiX-users] Upgrade in per-user folder generates double entries in
Add/Remove programs

Hi,

I modified the WixUI_Advanced sample to prevent downgrading by adding
these lines:

   <Upgrade Id="UPGRADE_CODE_UID">
     <UpgradeVersion OnlyDetect="yes" Minimum="$(var.PRODUCTVERSION)"
Property="NEWERVERSIONDETECTED" IncludeMinimum="no" />
     <UpgradeVersion OnlyDetect="no" Maximum="$(var.PRODUCTVERSION)"
Property="OLDERVERSIONBEINGUPGRADED" IncludeMaximum="no" />
   </Upgrade>
   <Condition Message="A later version of [ProductName] is already
installed. Setup will now exit.">
     NOT NEWERVERSIONDETECTED OR Installed
   </Condition>

   Of course, UPGRADE_CODE_UID is the same UID than the product's
UpgradeCode property.

   This works well as long as I install to the per-machine folder.
   Installing to the per-user folder generates a second entry in add /
remove programs instead of upgrading the product.

Any hints?

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