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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