I am trying to get the sample https://github.com/SignalR/SignalR/wiki/QuickStart-Hubs to run with MVC4. I added

Question

Editorial Team

Asked: June 17, 20262026-06-17T12:09:00+00:00 2026-06-17T12:09:00+00:00

I added

<script src="/signalr/hubs" type="text/javascript"></script>

and have inlcuded jquery before singlar javascriptfiles in my html.
But i am getting the Chrome console error

http://localhost:35787/signalr/hubs/ 403 (Forbidden) 
Uncaught TypeError: Cannot read property 'client' of undefined

Of course i installed the nuget-package and created the hub class. I have no folder /signalr/hubs?

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Editorial Team · Answer 1 · 2026-06-17T12:09:01+00:00

Editorial Team

I had created a folder “/signalr/hubs” in my project where i saved my hubs. This caused the error! After i removed it it works.

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