Hello Mike,
Can you try installing ColdFusion with built-in port. Please try the following to enable the same, with the current installation. In cf_root\cfusion\runtime\con\server.xml one can find the following connector block -
<!-- internal webserver end -->
<Connector executor="tomcatThreadPool" maxThreads="50"
port="8500" protocol="org.apache.coyote.http11.Http11Protocol"
connectionTimeout="20000"
redirectPort="8445" />
<!-- internal webserver end -->
This is the connector for the built-in webserver. If it is not enabled through installer, uncomment this block to enable it later on. Restart server.
Once done, please try to access the CF admin with http://localhost:8500/CFIDE/administrator/index.cfm or try replacing the "localhost" with "127.0.0.1" or alternatively the ip of the system.
Hope this helps.
Regards,
Anit Kumar