https://bugs.winehq.org/show_bug.cgi?id=54623
--- Comment #8 from Mohamad Al-Jaf mowinebugs@mail.com --- (In reply to a44687 from comment #7)
Further information: I also am getting a dotnet exception dialog "Error 3:The type initializer for 'System.Net.WebSockets.WebSocketProtocolComponent' threw an exception" just before it hangs.
The error seems to be caused by the stub: https://referencesource.microsoft.com/#system/net/system/Net/WebSockets/WebS...
Though, it doesn't seem like it would cause a hang. Could you test it with the native websocket.dll from Windows?
Unfortunately, I can't test it myself as there doesn't seem to be an option to register an account for MediRoutes.