Today I setup a new site in IIS 7, added the default document for index.cfm, then ran the ColdFusion connector. That was the wrong thing todo as now I have a “Cannot add duplicate collection entry of type ‘add’ with unique key attribute ‘value’ set to ‘index.cfm'”.
To resolve the issue I removed the line from the web.config file.
<add value="index.cfm" />
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Thank you! I was still running into the following error when trying to load up the site: HTTP Error 500.19 Code Error: This configuration section cannot be used at this path. This happens when the section is locked at a parent level. etc…
So, I removed the web.config file altogether and the site loaded up properly. Perhaps that is not appropriate for everyone, but it works for me.