After installing ColdFusion 8 and Apache successfully you may still see an "HTTP 500 Internal Server Error" when navigating to a ColdFusion page. All is not lost, you simply need to configure, or check the configuration of Apache. Apache requires very little post installation modification, but it is always good practice to check the httpd.conf file to ensure that the ColdFusion "install" scripts did what they were supposed to do. Read more – ‘Configuring ColdFusion 8 with Apache’.
