Configuration Error

Configuration Error ASP.Net

solution:
open your web config, find "<authentication mode="Windows"/>" and delete it. So your ASP.net can run normally.

HTTP Error 500.19 - Internal Server Error

THE ERROR:

HTTP Error 500.19 - Internal Server Error with Error Code: 0x80070021

The requested page cannot be accessed because the related configuration data for the page is invalid.

ERROR DETAILS:

Module: RequestFilteringModule
Notification: BeginRequest
Handler: StaticFile
Error Code: 0x80070021 Config Error: This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".
Config File: \\?\C:\RnDInternet\web.config
152: <security>
153: <requestFiltering allowDoubleEscaping="true"/>
154: </security>