Copy if not exist in WiX

Question

I have a config file, myapp.exe.config, that I want to install only if it does not already exist. That is, I don\'t want to overwrite any existing config file. How can this

Answer 1

You want to use NeverOverwrite and Permanent on the component...

I use this on my config.json files that contain really long nasty connection strings to a web service. It should never be blanked out by any user action and linger behind after an uninstall.

http://wixtoolset.org/documentation/manual/v3/xsd/wix/component.html