i am trying to add an website to iis 7 put when i try to run the website its gives the following error:

HTTP Error 500.19 - Internal Server Error

Module  IIS Web Core
Notification    BeginRequest
Handler Not yet determined
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 \\?\E:\Code\web\xSP\xSP Protocol\web.config
Requested URL   http://localhost:80/
Physical Path   E:\Code\web\xSP\xSP Protocol
Logon Method    Not yet determined
Logon User  Not yet determined


Config Source

  136:      </modules>  
  137:      <handlers>
  138:          <remove name="WebServiceHandlerFactory-Integrated"/>

please any help ?