Incorrect extensions create source view of page

Symptoms

When you request a page with an extension other than "html" or "htm" the browser displays the HTML source instead of the page. You are using dispatcher.

Cause

What you have encountered happens when the web server returns a content type of text/plain for all unknown extension. IE will display the content properly, Firefox have this problem as it follows the http header strictly.

This occurs for cached content by the dispatcher, if you use the URL http://www.yoursite.com/site/en/index.htl?a=a you will see that the content is displayed correctly, as the content is served from the CQ instance with the correct content type been set.

Resolution

To change the web server behavior, you will need to change the default mime type to be text/html If you are using Apache, modify your http.conf, look for DefaultType and change the value to text/html

For other web server, you will need to check out the web server documentation on how to change the default mime type.

After changing the configuration, restart the web server, clear your browser cache