HTTP Error 500.19 while hosting Wcf Service - wcf

Question

I am hosting Wcf application on my local machine(32 bit machine).I am getting below error.
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".
Attaching the Config file details for the same.
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<services>
<service name="WcfServiceDemo.ServiceCalculateCost" >
<endpoint address="" binding="wsHttpBinding" contract="WcfServiceDemo.IServiceCalculateCost"></endpoint>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>

Answer 1

IIS 7 implements "Configuration Locking". This is to help with IIS administration.
Here, look at the error details and how to resolve the same: IIS 7 – This configuration section cannot be used at this path.
As per it, one of the resolution:
Open the applicationHost.config file, located here: %windir%\system32\inetsrv\config\applicationHost.config
Edit the "handlers" section.
Change this line:
<section name=”handlers” overrideModeDefault=”Deny” />
To:
<section name=”handlers” overrideModeDefault=”Allow” />