WCF web service error: the service cannot be activated because it does not support ASP.NET compatibility

Question

I am trying to create a calm wcf web service. When I try to connect to the service through the client, I get the following error:

The service cannot be activated because it does not support ASP.NET compatibility. Compatibility with ASP.NET is included for this application. Disable ASP.NET compatibility mode in the web.config file, or add the AspNetCompatibilityRequirements attribute to the service type with the RequirementsMode parameter as Allowed or Required.

Others were having problems, but they fixed it with changes to their web.config. I performed their fix, but the problem still exists. here is my web.config:

<system.serviceModel> <behaviors> <endpointBehaviors> <behavior name="WebBehavior" > <webHttp /> </behavior> </endpointBehaviors> <serviceBehaviors> <behavior name="MyServiceBehavior"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> </behavior> <behavior name=""> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="false" /> </behavior> </serviceBehaviors> </behaviors> <services> <service behaviorConfiguration="MyServiceBehavior" name="myfirstwcf"> <endpoint address="ws" binding="basicHttpBinding" contract="Imyfirstwcf" /> <endpoint address="ws2" binding="wsHttpBinding" contract="Imyfirstwcf" /> <endpoint address="" behaviorConfiguration="WebBehavior" binding="webHttpBinding" contract="Imyfirstwcf" /> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services> <serviceHostingEnvironment aspNetCompatibilityEnabled= "true" multipleSiteBindingsEnabled="true" /> </system.serviceModel> 

Answer 1

In the main service, you can mark your service as:

 [AspNetCompatibilityRequirements( RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] 

From http://forums.silverlight.net/t/21944.aspx

Answer 2

he will work:

you change these lines in your code or add a line in web.config:

 <system.serviceModel> <serviceHostingEnvironment aspNetCompatibilityEnabled="false" multipleSiteBindingsEnabled="true" /> </system.serviceModel> 

Answer 3

If someone has many services and services created using a custom ServiceHostFactory , then AspNetCompatibilityRequirementsAttribute can also be set in the CreateServiceHost method.

Example:

 public class HostFactory : ServiceHostFactory { protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses) { var host = new ServiceHost(serviceType, baseAddresses); //other relevent code to configure host end point etc if (host.Description.Behaviors.Contains(typeof(AspNetCompatibilityRequirementsAttribute))) { var compatibilityRequirementsAttribute = host.Description.Behaviors[typeof(AspNetCompatibilityRequirementsAttribute)] as AspNetCompatibilityRequirementsAttribute; compatibilityRequirementsAttribute.RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed; } else { host.Description.Behaviors.Add(new AspNetCompatibilityRequirementsAttribute() { RequirementsMode =AspNetCompatibilityRequirementsMode.Allowed}); } return host; } }