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RC1 Failed connection handshake after update from Preview 7 -> RC1 #36672

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@cbdg-mitch

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@cbdg-mitch

Hi all,

I just updated my blazor applications to RC1 as well as all other nugets that were preview 7 -> RC1, and am now getting this on all of my blazor apps. My MVC apps are working fine after the update, but all 4 of my updated blazor apps are doing this. Should I revert back to Preview 7? Pretty blocked here.

Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionManager: Debug: New connection JKAjyXbT2EB55U85XkOndA created.
Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher: Debug: Sending negotiation response.
Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher: Debug: Establishing new connection.
Microsoft.AspNetCore.SignalR.HubConnectionHandler: Debug: OnConnectedAsync started.
Microsoft.AspNetCore.Http.Connections.Internal.Transports.WebSocketsTransport: Debug: Socket opened using Sub-Protocol: '(null)'.
Microsoft.AspNetCore.Http.Connections.Internal.Transports.WebSocketsTransport: Debug: Waiting for the application to finish sending data.
Microsoft.AspNetCore.SignalR.HubConnectionContext: Debug: Failed connection handshake.
Microsoft.AspNetCore.Http.Connections.Internal.Transports.WebSocketsTransport: Debug: Socket closed.
Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionManager: Debug: Removing connection RyCTYkvlKdR_KNL529goQg from the list of connections.

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    Needs: Attention 👋This issue needs the attention of a contributor, typically because the OP has provided an update.area-signalrIncludes: SignalR clients and servers

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