A fatal error occurred when attempting to access the SSL server credential private key: 0x8009030d
First published on MSDN on Apr 28, 2017 Recently, I have assisted a Premier customer who installed a new certificate on Windows Server 2008 R2 but was unable to bind the certificate to the Website hosted on IIS.Crash at System.Web.LegacyAspNetSynchronizationContext.CallCallback
If you see crash at the following call stack, that mostly probably is because web application is currently configured to use Legacy ASP.NET Synchronization Context, but the code is using some new features, such as Tasks (from Task Parallel Library) that require usage of what we call “Task-friendly ASP.NET Synchronization Context.” The old (Legacy) context cannot handle some asynchronous calls properly and this leads to the crash as observed in the above. Web App Crashes frequently. Below are found in application event log each time of crash: Application: w3wp.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException at System.Web.ThreadContext.AssociateWithCurrentThread(Boolean) at System.Web.HttpApplication.OnThreadEnterPrivate(Boolean) at System.Web.LegacyAspNetSynchronizationContext.CallCallbackPossiblyUnderLock(System.Threading.SendOrPostCallback, System.Object) at System.Web.LegacyAspNetSynchronizationContext.CallCallback(System.Threading.SendOrPostCallback, System.Object) at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(System.Threading.ContextCallback, System.Object, System.Threading.Tasks.Task ByRef) at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem() at System.Threading.ThreadPoolWorkQueue.Dispatch() To Resolve the issue add the following in web.config: <appSettings> <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" /> </appSettings>
