每个WCF项目VS2013上的WcfSvcHost.exe访问冲突异常

Question

I have such problem in VS2013 :

Whenever I try to debug a WCF Library project I get an error on startup:

An unhandled exception of type ' System.AccessViolationException ' occurred in WcfSvcHost.exe .

It's the same even when trying debugging a fresh WCF project from template - does not work. Event viewer:

.NET Runtime exception
App: WcfSvcHost.exe
Ver: v4.0.30319
Exception: System.AccessViolationException

Stack:

in System.Net.UnsafeNclNativeMethods.SetFileCompletionNotificationModes(CriticalHandle handle, FileCompletionNotificationModes modes)
in System.Net.HttpListener.CreateRequestQueueHandle()
in System.Net.HttpListener.Start()
in System.ServiceModel.Channels.SharedHttpTransportManager.OnOpen()
in System.ServiceModel.Channels.TransportManager.Open(TransportChannelListener channelListener)
in System.ServiceModel.Channels.TransportManagerContainer.Open(SelectTransportManagersCallback selectTransportManagerCallback)
in System.ServiceModel.Channels.HttpChannelListener`1.OnOpen(TimeSpan timeout)
in System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
in System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan timeout)
in System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
in System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
in System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
in Microsoft.Tools.SvcHost.ServiceHostHelper.OpenService(ServiceInfo info)
in Microsoft.Tools.SvcHost.ServiceHostHelper.OpenService(System.String)
in Microsoft.Tools.SvcHost.MainForm.theBackgroundWorker_DoWork(System.Object, System.ComponentModel.DoWorkEventArgs)
in System.ComponentModel.BackgroundWorker.WorkerThreadStart(System.Object)
in System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr, System.Object[], System.Object, System.Object[] ByRef)
in System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage, System.Runtime.Remoting.Messaging.IMessageSink)
in System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
in System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
in System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
in System.Threading.ThreadPoolWorkQueue.Dispatch()`

Application error in event viewer:

App causing error: WcfSvcHost.exe, ver: 12.0.21005.1, timestamp: 0x524fc58b
Module causing error: KERNELBASE.dll, ver: 6.3.9600.17278, timestamp: 0x53eebf2e
Exception code: 0xe0434352
Causing process ID: 0x8d8
Error application path: C:\\Program Files (x86)\\Microsoft Visual Studio 12.0\\Common7\\IDE\\WcfSvcHost.exe
Error module path: C:\\Windows\\system32\\KERNELBASE.dll
Windows: 8.1 Pro x64 , all available updates in
VS 2013 Pro version 12.0.31101.00 Update 4

I will be very grateful for any help, banging my head against the wall with this..

Answer 1

Had the same issue with HttpListener while using WebApi\\SignalR Owin on Windows 8.

In my code I was Calling: WebApp.Start<Startup>(url); Throws an access violation in System.Net.UnsafeNclNativeMethods.SetFileCompletionNotificationModes .

Turns out that "some" third party programs are not compatible with Microsoft's ifs winsock lsps. For me it was Lavasoft's "Web Companion". (Which uninstalled fixed the issue)

See Handshake exception occurring when connecting to SQL Server Azure with .NET 4.5

SetFileCompletionNotificationModes seems to not work properly

https://support.microsoft.com/en-us/kb/2568167

Hope this helps.