Sharepoint 2007/2010: Sharepoint Designer Connection Error


Error Detail:

 WebHost failed to process a request.
Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/11404313
Exception: System.ServiceModel.ServiceActivationException: The service ‘/_vti_bin/client.svc’ cannot be activated due to an exception during compilation.  The exception message is: The extended protection settings configured on IIS do not match the settings configured on the transport.  See inner exception for details.. —> System.NotSupportedException: The extended protection settings configured on IIS do not match the settings configured on the transport.  See inner exception for details. —> System.InvalidOperationException: The ExtendedProtectionPolicy.PolicyEnforcement values do not match.  One policy has a value of WhenSupported, while the other has a value of Never.  These values must match exactly.
— End of inner exception stack trace —
at System.ServiceModel.Channels.HttpChannelListener.ApplyHostedContext(VirtualPathExtension virtualPathExtension, Boolean isMetadataListener)
at System.ServiceModel.Channels.HttpTransportBindingElement.BuildChannelListener[TChannel](BindingContext context)
at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]()
at System.ServiceModel.Channels.MessageEncodingBindingElement.InternalBuildChannelListener[TChannel](BindingContext context)
at System.ServiceModel.Channels.WebMessageEncodingBindingElement.BuildChannelListener[TChannel](BindingContext context)
at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]()
at System.ServiceModel.Channels.Binding.BuildChannelListener[TChannel](Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, BindingParameterCollection parameters)
at System.ServiceModel.Description.DispatcherBuilder.MaybeCreateListener(Boolean actuallyCreate, Type[] supportedChannels, Binding binding, BindingParameterCollection parameters, Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, ServiceThrottle throttle, IChannelListener& result, Boolean supportContextSession)
at System.ServiceModel.Description.DispatcherBuilder.BuildChannelListener(StuffPerListenUriInfo stuff, ServiceHostBase serviceHost, Uri listenUri, ListenUriMode listenUriMode, Boolean supportContextSession, IChannelListener& result)
at System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost)
at System.ServiceModel.ServiceHostBase.InitializeRuntime()
at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
— End of inner exception stack trace —
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)
Process Name: w3wp
Process ID: 3376

Solution:

– Set the extended protection to off:

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