Summary

Synopsis

This articles applies to Basic MSI projects. Sometimes a custom action should only be run if the user selects the Remove option during the Maintenance sequence, not after the Modify selection.

Discussion

To make sure that a custom action runs only if the user has chosen uninstallation, you should use the windows installer REMOVE property. This property can be used as a condition. The REMOVE property resolves to true if a feature has been selected to be removed during maintenance mode. To only run a custom action if a particular feature is set for uninstall, you can use this condition REMOVE AND &featurename = 2. This evaluates to true if the feature is set to INSTALLSTATE_ABSENT. The custom action must be placed after the InstallValidate standard action in the Installation\Execute sequence.

The following condition can be used to only fire off or run a custom action during an uninstall, but not during a major upgrade:

(REMOVE~="ALL") And (NOT UPGRADINGPRODUCTCODE)

Additional Information

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