'Blazor server project with SignalR can't work on my IIS Server

I'm developing a WebApp in Blazor where i need to use SignalR. All works (including debugging with visual studio) until i try to test it on IIS, where the page start to loading and never stop. No error, no timeout to the request, only a blank page and the icon of loading on the browser. I've already try the web socket issues on IIS and no changes happened. Thanks in advance for yours solutions



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