Applying Major Upgrades by Installing the Product

• Major Upgrades - Win32 apps

  A major upgrade is a comprehensive update of a product that needs a change of the ProductCode Property.

• Preparing an Application for Future Major Upgrades - Win32 apps

  Authors of installation packages should include upgrading information in their .msi files to ensure that their installation package can take advantage of the full upgrading functionality available with the Microsoft Windows Installer.

• Applying Major Upgrades by Patching the Local Installation of the Product - Win32 apps

  A major upgrade can be applied to an application by patching the local installation of the application from the command line or by using an executable.

• FindRelatedProducts Action - Win32 apps

  The FindRelatedProducts action runs through each record of the Upgrade table in sequence and compares the upgrade code, product version, and language in each row to products installed on the system.

• Upgrade Table - Win32 apps

  The Upgrade table contains information required during major upgrades.

• Minor Upgrades - Win32 apps

  A minor upgrade is an update that makes changes to many resources.

• Updating Upgrade Table for an Upgrade - Win32 apps

  To apply a major upgrade using Windows Installer, the original product installation package must specify an UpgradeCode Property, described in Preparing an Application for Future Major Upgrades, and the upgrade package must have an Upgrade table.

• Using an UpgradeCode - Win32 apps

  The UpgradeCode is primarily used for supporting major upgrades, although small and minor upgrade patches may use the UpgradeCode for product validation.

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