A Frequent problem when trying to run ASP applications on your own web space or web server is how do you debug the application if it is not running correctly and only showing a generic error message.
In Internet Explorer if the application crashes all you see is a page saying – ‘The page cannot be displayed.’ and the generic error ‘HTTP 500 – Internal server error’. You’ll want to disable this to receive more information about the error.
Please disable the “SHOW FRIENDLY HTTP ERRORS” option in IE
This can be found under TOOL -> INTERNET OPTIONS -> Advanced TAB -> Browsing Category
Content retrieved from: https://support.appliedi.net/kb/a358/how-do-i-disable-friendly-http-errors-in-ie.aspx.