VNC Connect Error Messages – RealVNC Help Center
help.realvnc.com › hc › en-usAug 15, 2019 · The connection was refused by the host computer. VNC Server is either not running, or not running on the specified port. Ensure VNC Server is running. If you are establishing a direct connection and have specified a port other than the default for VNC (5900), ensure VNC Server is configured to use that port.