Error en la conexión utilizando usuario del pool para el Portal Evolution Rys (EvolutionRys 1100)

Quiero utilizar un usuario, al igual que Evolution, con seguridad integrada para el portal Evolution Rys. Sin embargo, tengo un error que no tengo acceso. Estoy investigando el caso y he intentado dar acceso con el comando netsh http add urlacl url. Si utilizo el pool con usuario local system si logro mostrar el sitio pero tengo el problema que con dicho usuario no existe un usuario como tal en la base de datos. El error que tengo es el siguiente en el explorador al utilizar el pool que tiene un usuario de dominio (que es el mismo que funciona para Evolution):

Server Error in '/EvolutionRys' Application.

Access is denied

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.HttpListenerException: Access is denied

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[HttpListenerException (0x5): Access is denied]
   System.Net.HttpListener.AddAllPrefixes() +335
   System.Net.HttpListener.Start() +680
   Raven.Database.Server.HttpServer.StartListening() +672
   Raven.Client.Embedded.EmbeddableDocumentStore.InitializeInternal() +707
   Raven.Client.Document.DocumentStore.Initialize() +799
   Aseinfo.VH4.WebCandidatos.App_Start.RavenDbPackage.PostStart() +441

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
   System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +229
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +211
   System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +35
   WebActivator.ActivationManager.RunActivationMethods() +392
   WebActivator.StartMethodCallingModule.Init(HttpApplication context) +107
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +530
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +304
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +404
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): Exception has been thrown by the target of an invocation.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12617668
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +12457285