Balaji Nidadavolu wrote:

*_Requirement(in WIX)_** : We are currently adding a component to the existing software. While installing the component, we need to take a backup of 2 files since they will be replaced with their latest versions. While uninstalling the component, we need to replace the newer versions with their older version counterparts.*


MSI doesn't support that functionality so you'd have to use deferred custom actions to accomplish it.

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