WIX: How to detect if third-party application is installed? -

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In WIX should it be ascertained that a third party application is installed with a specified upgrade code and its installation is Folder? I can suggest that a custom action is necessary, but what to do in such a custom action? Is it possible to detect such things in VBS Custom Action?

It really depends on the application Most applications publish a registry key that they detect In that case you need an element, no custom action is necessary if the application was installed through MSI, sometimes it is better.


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