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   DefaultDocumentModule
Notification   ExecuteRequestHandler
Handler   StaticFile
Error Code   0x800700b7
Config Error   Cannot add duplicate collection entry of type 'add' with unique key attribute 'value' set to 'index.asp'
Config File   \\?\C:\intranet\online\web.config
Requested URL   http://www.clinictech.ops.go.th:80/online/cmo/FinalReport/
Physical Path   C:\intranet\online\cmo\FinalReport\
Logon Method   Anonymous
Logon User   Anonymous

Config Source:

    8:             <files>
    9:                 <add value="index.asp" />
   10:                 <add value="login.asp" />

More Information:

This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error.

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