Windows RealVNC server not accepting connections
mbmiller+l at gmail.com
Fri Oct 28 22:06:07 BST 2011
On Fri, 28 Oct 2011, Mike Miller wrote:
> I'm running the latest Free RealVNC server in service mode on a WinXP
> box and it isn't accepting any connections. I tried to connect to
> localhost and I get a dialog box right away saying the connection closed
> unexpectedly. I'm not prompted for a password.
I realized that I was allowing connections only from a certain other
machine on the subnet, and was therefore blocking connections from
localhost. I fixed that and then was able to make the connection from
localhost. So I guess this is what we see in the event log when WinVNC is
disallowing a connection (at least if it is from localhost):
SocketManager: unknown listener event: 0
This is still a problem:
> But when I try to connect from a Linux machine on the subnet, it doesn't
> register anything. When I use nmap on the Linux box to look at the
> Windows box, I see that port 5900 is "filtered" rather than "open".
> I was able to use "vncviewer -listen" on the Linux box to receive a
> connection from the VNC server on Windows. That worked but only
> momentarily. It locked up almost right away and then the VNC server
> crashed on Windows, including the usual Microsoft request to report the
> error, which I did.
Any ideas? Why would the server crash after making a connection to a
I'm guessing that my problem making a normal connection is due to some
kind of firewalling problem. I'm trying to turn all of that off. It's
hard to figure out exactly where the problem is, though.
More information about the VNC-List