IIS 7.5 HTTP 500.19 Internal Server Error Config invalid

Question

I am using Windows 2008 R2 with IIS 7.5 and have mapped the source of my website to a network drive. When I do, the below error occurs. When pointing to the local c: drive the website works.

Error Summary
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.

Detailed Error Information
Module  IIS Web Core
Notification    Unknown
Handler Not yet determined
Error Code  0x80070003
Config Error    Cannot read configuration file
Config File \\?\H:\ExcelAutomation\1.0\src\docs\web.config
Requested URL   http://vmwws085381.msad.ms.com:80/index.html
Physical Path   
Logon Method    Not yet determined
Logon User  Not yet determined

Config Source
   -1: 
    0: 

Answer 1

The solution for me was to open up IIS, click on my site, and under Advanced Settings change the physical path to the network share like \\server\share\.. instead of using the mapped drive.

Original source that helped me arrive to this solution is here: http://forums.iis.net/t/1157959.aspx

Answer 2

Another cause is not having the URL Rewrite Module installed if your web-app references this in the associated Web.config file – this is detailed in this Stack Overflow Question