I'm having the same problem in the tests done in IIS with the DLL, when sending a message using the command: BroadcastMessage('chat', ['chatText', S]); Displays the error: "Access violation at address 025EB20C in module" "Read of address 00000008" And also the command: UniServerModule.WebSocketStack.GetSessionSocket(UniSession.SessionId) Always returns "Nil" Could someone help us?