vnc the connection was refused

"Connection refused" error message usually indicates that the VNC server is not running or is not configured to accept connections from your computer.

Here are a few things you can try:

1. Check if the VNC server is running on the remote machine. You can do this by logging into the remote machine and running the command `vncserver -list`. If the output shows a running VNC server, then you can proceed to the next step. If not, you may need to start the VNC server by running the command `vncserver`.

2. Check if the VNC server is configured to accept connections from your computer. You can do this by checking the VNC server's configuration file, usually located at `/etc/vnc.conf` or `/etc/vnc/xstartup`. Make sure that the file has the correct settings for allowing remote connections.

3. Check if there is a firewall or network issue blocking the connection. Make sure that the VNC server's port (default is 5900) is open and not blocked by any firewall rules or network configurations.

4. Try connecting from a different computer or network to see if the issue is specific to your machine or network.

If none of these solutions work, you may need to seek further assistance from the VNC server's support team or documentation.