Upgrade Support

Working notes on Upgrade Support: <Product Id="*", Version no. (first 3 parts) must change, and <MajorUpgrade.

<Product Id="*"

UpgradeCode="PUT-GUID-HERE".

Upgrade Code ties the series.

Product Id must change across versions.

Version no. (first 3 parts) must change

<MajorUpgrade

DowngradeErrorMessage="A later version of [ProductName] is already installed. Setup will now exit."/>.