CF11 install problem on WIndows server 2012 R2

Question

We have a new install windows server 2012 R2 with a new install CF11 standard installed on C drive. Everything is 64bit. The CF administrator site and login works fine.  cfm files will not serve up in the default directory, but IIS shows htm files fine.  CF administrator runs fine.
Web Server Config tool will only show "None" in the IIS Web Site box.  The usual CGI, APS, etc have been installed on IIS.  In fact IIS and CF11 have been reinstalled.  wsconfig.exe manual run shows no errors.
The problem is that any call to a cfm template results in an error (html pages serve fine):
HTTP Error 500.0 - Internal Server Error
The page cannot be displayed because an internal server error has occurred.
Detailed Error Information:
Module       IsapiModule
Notification       ExecuteRequestHandler
Handler       cfmHandler
Error Code       0x8007007f
Requested URL       http://localhost:80/default.cfm
Physical Path       C:\inetpub\wwwroot\default.cfm
Can anybody give any suggestions for troubleshooting?  No logs seem to show any information that helps.

Answer 1

Fixed the problem......... it is not a CF problem alone but and mostly an IIS problem ....
1) remove IIS completely...... including the inetpub directory..... remove .NET Extensibility from server manager under Application Development if inetpub in use error is present... inetpub has to be deleted.
2) reboot
3) reinstall IIS and enable all the usual stuff, ie, CGI, ISAPI, .NET, ASP , WebSocket Protocol, etc under Application Development
4) restart IIS and CF
5) Set Web Server Config to  "All"
60 restart IIS and CF
The trick to completely reinstall IIS and that is only done if you can delete the inetpub folder under root drive.