$ 0 0 Detailed Error Information:Module IpRestrictionModuleNotification BeginRequestHandler ExtensionlessUrl-Integrated-4.0Error Code 0x80070021Config 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:\xxxxxx\web.configRequested URL http://localhost:1678/Physical Path C:\Users\Sheshagiri\Documents\Visual Studio 2013\WebSites\xxxxxxLogon Method Not yet determinedLogon User Not yet determinedRequest Tracing Directory C:\Users\Sheshagiri\Documents\IISExpress\TraceLogFiles\xxxxxxConfig Source:5: <security> 6: <ipSecurity allowUnlisted="true"> 7: <clear/>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. If you see the text "There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined", this error is because you are running a .NET Framework 3.5-based application in .NET Framework 4. If you are running WebMatrix, to resolve this problem, go to the Settings node to set the .NET Framework version to ".NET 2". You can also remove the extra sections from the web.config file.View more information »