When a Windows Communications Foundation (WCF) web service returns a 404 Not Found error, after installing the HTTP-Activation feature in IIS, you might need to add an extra Handler to your IIS configuration.
Configure .svc WCF handler in IIS
When the .svc web service handler doesn’t work on IIS 8.0 with ASP.NET 4.5…
- Request path:
*.svc - Type:
System.ServiceModel.Activation.ServiceHttpHandlerFactory,
System.ServiceModel.Activation, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35 - Name:
svc-Integrated-4.0
[TypeLoadException: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.]
Code language: JSON / JSON with Comments (json)If you have installed the NET-WCF-HTTP-Activation45 feature in IIS, and the *.svc handler is present in IIS, then you may need to edit your web.config file to let the Version=3.0.0.0 version of System.ServiceModel (System.ServiceModel.Activation.HttpModule) to be loaded only for runtimeVersionv2.0:
<system.webServer>
<modules>
<remove name="ServiceModel"/>
<add name="ServiceModel"
type="System.ServiceModel.Activation.HttpModule, System.ServiceModel,
Version=3.0.0.0,
Culture=neutral,
PublicKeyToken=b77a5c561934e089"
preCondition="managedHandler,runtimeVersionv2.0" />
</modules>
</system.webServer>Code language: HTML, XML (xml)if your webservice displays the following Exception:
[TypeLoadException: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.]
System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName, ObjectHandleOnStack type) +0
System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName) +70
System.RuntimeType.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark) +39
System.Type.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) +37
System.Web.Compilation.BuildManager.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) +65
System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, XmlNode node, Boolean checkAptcaBit, Boolean ignoreCase) +38
[ConfigurationErrorsException: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.]
System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, XmlNode node, Boolean checkAptcaBit, Boolean ignoreCase) +359
System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, Boolean checkAptcaBit) +19
System.Web.Configuration.Common.ModulesEntry.SecureGetType(String typeName, String propertyName, ConfigurationElement configElement) +39
System.Web.Configuration.Common.ModulesEntry..ctor(String name, String typeName, String propertyName, ConfigurationElement configElement) +42
System.Web.HttpApplication.BuildIntegratedModuleCollection(List`1 moduleList) +160
System.Web.HttpApplication.GetModuleCollection(IntPtr appContext) +950
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +82
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +172
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +336
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +296
[HttpException (0x80004005): Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9915300
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254
Code language: CSS (css)Show Your Support
If you want to step in to help me cover the costs for running this website, that would be awesome. Just use this link to donate a cup of coffee ☕($10 USD or €10 EUR for example). And please share the love and help others make use of this website. Thank you very much! <3 ❤️