I have made a setup of a web application which could be installed multiple times in the same machine. I need to remove the sites created during installation at the time of uninstallation process. For this I wrote a custom action using a installer class.
Now, the problem is, if I have multiple installation of the same web application, custom uninstallation is being called only during the uninstallation of the last application.
Can somebody please help? Thanks a lot in advance.
What tool did you use to author the MSI? What conditional expression did you use for the custom action?
My guess is you used a tool that abstracted you from this and that you are using component action states. It's not until the last client ( product ) of the shared component uninstalls that the component uninstalls and therefore the custom action is executed.
You should also know that installer class custom actions are known for their fragility. Using a WiX DTF ( Windows Installer XML, Deployment Tools Foundation ) managed custom action would be a much wiser choice.
