My Uninstall runs a custom code that can fail. In case of a failure I would like to leave and not remove all the files + uninstall file and to show a message to the user.
In the current state even if the custom code fails all files are still removed so the systm is inconsistent .
Do I have a way to indicate the uninstaller to not remove the files?
If you can run your code early enough (Pre-Uninstall task?), you can abort the uninstaller there; if your code can set a property, for example, you can add a conditional Show Message Dialog action that exits the installer...
