Hosting WCF Web Serveic on Windows Server 2003

Question

Getting the following err...

Server Error in '/' Application. IIS specified authentication schemes 'IntegratedWindowsAuthentication, Anonymous', but the binding only supports specification of exactly one authentication scheme. Valid authentication schemes are Digest, Negotiate, NTLM, Basic, or Anonymous. Change the IIS settings so that only a single authentication scheme is used. 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.InvalidOperationException: IIS specified authentication schemes 'IntegratedWindowsAuthentication, Anonymous', but the binding only supports specification of exactly one authentication scheme. Valid authentication schemes are Digest, Negotiate, NTLM, Basic, or Anonymous. Change the IIS settings so that only a single authentication scheme is used.

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:

[InvalidOperationException: IIS specified authentication schemes 'IntegratedWindowsAuthentication, Anonymous', but the binding only supports specification of exactly one authentication scheme. Valid authentication schemes are Digest, Negotiate, NTLM, Basic, or Anonymous. Change the IIS settings so that only a single authentication scheme is used.] System.ServiceModel.Web.WebServiceHost.SetBindingCredentialBasedOnHostedEnvironment(ServiceEndpoint serviceEndpoint, AuthenticationSchemes supportedSchemes) +446264
System.ServiceModel.Web.WebServiceHost.AddAutomaticWebHttpBindingEndpoints(ServiceHost host, IDictionary`2 implementedContracts, String multipleContractsErrorMessage) +709
System.ServiceModel.Web.WebServiceHost.OnOpening() +203 Microsoft.ServiceModel.Web.WebServiceHost2.OnOpening() in e:\\bt\\3781\\Microsoft.ServiceModel.Web\\Microsoft.ServiceModel.Web\\WebServiceHost2.cs:69 System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) +229
System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +121
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +479

[ServiceActivationException: The service '/Service.svc' cannot be activated due to an exception during compilation. The exception message is: IIS specified authentication schemes 'IntegratedWindowsAuthentication, Anonymous', but the binding only supports specification of exactly one authentication scheme. Valid authentication schemes are Digest, Negotiate, NTLM, Basic, or Anonymous. Change the IIS settings so that only a single authentication scheme is used..]
System.ServiceModel.AsyncResult.End(IAsyncResult result) +11599786
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +194
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.ExecuteSynchronous(HttpApplication context, Boolean flowContext) +176
System.ServiceModel.Activation.HttpModule.ProcessRequest(Object sender, EventArgs e) +278
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Version Information: Microsoft .NET Framework Version:2.0.50727.3615; ASP.NET Version:2.0.50727.3618

Answer 1

According to your error above, you have IIS authentication configured on your Windows 2003 machine to allow two different types of authentication (integrated & anonymous). Change it to one type of authentication - the one that matches your WCF configuration. I'm guessing you only want anonymous (and not integrated) enabled in the IIS configuration, but that's your design choice..