Here’s another, rather unhelpful, IIS7 error that I encountered the other day:
The requested page cannot be accessed because the related configuration data for the page is invalid
The details of the error are:
Detailed Error information:
Module: IIS Web Core
Notification: Begin Request
Handler: Not yet determined
Error Code: 0x8007000d
Requested URL: <your url>
Physical path: <your path>
Login Method: Not yet determined
Login User: Not yet determined
Config File: \\?\<your config path>
Eventually I figured out that this was due to the URL Rewrite Module not having been installed while I was trying to run a site that needed it.
Thanks to the contributors of this post.