VNC in listening mode, connection fails with "read: Connection reset by peer (10054)

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I have my home PC configured to "Run Listening VNC Viewer", and the PC has a 
static IP address of behind a wireless Belkin router.  I have 
port-forwarded TCP ports 5500, 5800, and 5900 in my Belkin router to the 
same port addresses in, and I have configured my PC's McAfee 
firewall to open TCP ports 5500, 5800, and 5900.   I downloaded the 
PFPortChecker program from, and it confirms that all three 
ports are indeed open.

I have also created a DDNS hostname at so that I have a hostname 
whose DNS resolution will work even as Comcast periodically changes the IP 
address they give me.  I configured the Belkin router to update the site whenever the Comcast address changes.  I am able to ping my 
machine successfully using the DDNS hostname.  So far, so good.

On another PC in my Belkin's internal network, I can start up the VNC 
Server, select "Add Client", and connect to the listening viewer 
successfully by using, and can see the server machine's 
desktop.  Works perfectly.  If on that same machine I instead select "Add 
Client" but use the hostname, a pop-up immediately appears on the 
listening machine saying "read: Connection reset by peer (10054)".  If I 
click OK in the pop-up, the same message appears two more times, at which 
point the VNC server machine reports "Connection failed".  Any idea why this 
is failing?  It doesn't seem to be a port-forward problem.

Any help would be greatly appreciated.

Regards, Kevan 

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