Hi Eric,

I have solved the add-ons problem but I still got this error "Anonymous Users are not allowed in this application. You must sign in this website first.". Previously you ask me to go to Edit_Lobbies.aspx page to allow the anonymous setting but that is the setting for the chat room. In my application I do not need to create any chat room for the users to chat. I just want them to chat with their contacts without login to any chat room. Could you please assist why this error happen? My local pc run everything well.