I am having the same issue using Core and Angular 2.0. I have an Azure app service for the client and one for the server. Everything is working fine except signalr.
I am getting the following message in the chrome console
{azure-app-service-endpoint}hubs?_=1485791190035 Failed to load resource: the server responded with a status of 500 (Internal Server Error)
This is the stacktrace
System.NotSupportedException: The invoked member is not supported in a dynamic assembly.
at System.Reflection.Emit.InternalAssemblyBuilder.get_Location()
at Microsoft.AspNet.SignalR.Hubs.ReflectedHubDescriptorProvider.GetTypesSafe(Assembly a)
at System.Linq.Enumerable.<SelectManyIterator>d__162.MoveNext() at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext()
at Microsoft.AspNet.SignalR.Hubs.ReflectedHubDescriptorProvider.BuildHubsCache()
at System.Lazy1.CreateValue() at System.Lazy1.LazyInitValue()
at Microsoft.AspNet.SignalR.Hubs.ReflectedHubDescriptorProvider.GetHubs()
at System.Linq.Enumerable.<SelectManyIterator>d__162.MoveNext() at System.Linq.Enumerable.WhereEnumerableIterator1.MoveNext()
at System.Linq.Buffer1..ctor(IEnumerable1 source)
at System.Linq.OrderedEnumerable1.<GetEnumerator>d__1.MoveNext() at Microsoft.AspNet.SignalR.Hubs.DefaultJavaScriptProxyGenerator.GenerateProxy(IHubManager hubManager, IJavaScriptMinifier javaScriptMinifier, Boolean includeDocComments) at System.Lazy1.CreateValue()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Lazy1.get_Value() at Microsoft.AspNet.SignalR.Hubs.DefaultJavaScriptProxyGenerator.GenerateProxy(String serviceUrl) at Microsoft.AspNet.SignalR.Hubs.HubDispatcher.ProcessRequest(HostContext context) at Microsoft.Owin.Cors.CorsMiddleware.<Invoke>d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Owin.Mapping.MapMiddleware.<Invoke>d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Owin.WebSocketAcceptAdapter.<>c__DisplayClass6_0.<<AdaptWebSockets>b__0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.
I have solved it by updating the HangFire package to 1.6.8 using the Package Manager. Might be an idea to include in the documentation that a Package Restore is not enough but that we also need to update packages
