Comment by Simon_Weaver on Using SignalR Core on .NET 4.6.1

Only 50% true. You can use the SignalR Core client in .NET Framework to communicate with a .NET Core SignalR server. For instance I'm using a WPF application and it needs to communicate with both an 'old' and 'new' SignalR server. Even the newly released version 9 supports 4.6.2 for this client package (phew) nuget.org/packages/Microsoft.AspNetCore.SignalR.Client