"Unable to connect to..." message:
1. Make sure the basic network connection is good. Is there an Ethernet link light? If so, proceed, otherwise use another known-working network cable. Can the host computer "ping" the ConnectPort Display? If not, there's likely a network configuration issue. If so, can the host computer access the ConnectPort Display's Web UI?
2. The ConnectPort Display's password may not match the VNC Server password, so re-input them on both sides.
3. Open UltraVNC Server Properties on the host computer and DISABLE "Require MS Logon" (if enabled).
4. A software firewall, i.e. Windows Firewall or 3rd-party software firewall may be blocking the VNC Server TCP port (5900 by default). Disable the firewall or add an exception for the TCP port.
5. Another instance of VNC Server (or even other software that uses the VNC protocol, i.e. PC Anywhere), on the same port (i.e. 5900 TCP), could be conflicting. Configure VNC Server and the ConnectPort Display (via the Web UI) to another port, i.e. 5905. Be sure to reboot the ConnectPort Display after making that change.
"Access Denied" message:
1. The ConnectPort Display's password may not match the VNC Server password, so re-input them on both sides.
2. Open UltraVNC Server Properties on the host computer and DISABLE "Require MS Logon" (if enabled).
"Connecting please wait" message:
1. Having the "Loopback Only" option in the UltraVNC Server Properties CHECKED will cause this error, so uncheck it.
2. A software firewall, i.e. Windows Firewall or 3rd-party software firewall may be blocking the VNC Server TCP port (5900 by default). Disable the firewall or add an exception for the TCP port.
Last updated:
Jun 25, 2019