Server was unable to process request. ---> Could not retrieve a valid Windows identity. ---> Access is denied.

Error Name: Server was unable to process request. ---> Could not retrieve a valid Windows identity. ---> Access is denied. ******************** Error Message: (Event Viewer) The Web site http://xxxxxx/sites/DynamicsAx was not created correctly. Server was unable to process request. ---> Could not retrieve a valid Windows identity. ---> Access is denied. System.Web.Services.Protocols.SoapException at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at Microsoft.Dynamics.Framework.Deployment.Services.EPDeploymentService.CreateAxSitesAndPages(String siteUrl) at Microsoft.Dynamics.Framework.Portal.Deployment.EPFeatureReceiver.CreateAxSiteContent(SPWeb site, Boolean isEPHomeSite) ...