/signalr/hubs 404 not found after update to MVC5

Question

SignalR was working while project was ASP.NET MVC3. Now i upgraded it to MVC5 (not so easy to do, I must tell you).

Then I noticed that signalR was not working. I we

Answer 1

The SignalR js versions are supposed to be the same, but can be different. As a side effect you will find that error in browser console.

Check the version of SignalR library in Scripts folder and the one referenced in your view.

• ~/Scripts/jquery.signalR-2.1.0.min.js (SignalR tutorial);
• jquery.signalR-2.2.1.min.js is installed into scripts folder (nuget installation: install-package Microsoft.AspNet.SignalR).

Sometimes the most evident things are left unnoticed.