What does Connection closed unexpectedly mean?
When VNC Viewer shows this as an error message, it means that VNC Server closed the network connection at a time when the viewer was not expecting it to. This can happen, for example, when the viewer connects to the server and the server can’t handle the connection for some reason. Possible reasons for VNC Viewer showing this error message include: • A firewall blocking the connection by explicitly closing it. • VNC Server’s security is not properly configured. Ensure that you have selected an authentication method, set a password if required, and generated secure keys for the server if required. • VNC Server is crashing for some reason. If this is the case, then the VNC Server Service will no longer be “running” on the server machine. Under Windows NT based platforms, including Windows XP, you can find out why VNC Server closed the connection by looking at the server’s Application Event Log using the Event Viewer administrative tool. VNC Server will log information under the tag “WinV
