RE: TightVNC "Failed to connect to server" issue

From: Jon (Jon_at_discussions.microsoft.com)
Date: 02/10/05 

Date: Wed, 9 Feb 2005 18:11:01 -0800

Sergio:
   Here's a few things to check:

When you set up the Server on your PC, you had to specify a port, possibly
5900. This port wil need to be opened on your router. This can be done in
the port forwarding section. You want to forward whatever port you specified
during setup to your PC's internal IP address on the network utilizing a
TCP/IP connection (opposed to UDP) (the internal network IP is probably
something like 192.168.1.xxx). If you don't know your IP, go to Start--> Run
and type CMD and hit enter. Then type ipconfig /all at the prompt and scroll
down to find your IP address.

Also, uncheck the box for query console on incoming connection. What this
means is that the PC you are trying to connect to is waiting at a pop-up box
for someone to click OK to accept the incoming VNC request. If no one is
sitting at the computer you want to control, you will get the timeout message
you have been getting.

Also make sure you are specifying a password that must be entered in order
to access the PC. This will ensure security for the connection, and will
have no affect on the issues you have been having.

Good luck, I hope this helps. Let me know either way. If it doesn't, I'll
see what other advice I can offer.

-Jon

"Sergio" wrote:

> I have just set up TightVNC on my home machine which is running XP Home
> edition. It is my first experience using VNC with port forwarding from
> a router (I have comcast for internet access and a SpeedStream 2623
> wireless router connecting my cable modem to my PC). When I try to
> establish a connection from a client, it will pause for maybe 10
> seconds and then return with a "Failed to connect to server" dialog.
> The puzzling thing is that I turned on logging for the server and from
> the log file it looks like it's connecting just fine. The log entry
> looks like this:
>
> Tue Feb 08 22:17:17 2005
> vncSockConnect.cpp : accepted connection from xx.xx.xx.x
> vncClient.cpp : client connected : xx.xx.xx.xx (id 1)
>
> If I use http://www.gotomyvnc.com/ it tells me that my VNC server is
> accepting connections just fine (and that entry too shows up in the log
>
> Could anybody give me some guidance as to why the log shows that the
> client connects, but the client doesn't seem to realize this?
>
> I'm a bit suspicious of the advanced settings in the tightvnc server,
> which I admittedly don't fully understand. I have:
> For Query Settings:
> Query Console on incoming connections: Checked
> Query Timeout: 120
> Default Action: Accept
> Allow option to accept without authentication: not checked
> For Administration:
> Disable empty passwords: checked
> Allow loopback connections: not checked
>
> If anybody has any clue whatsoever what I can try, I would very much
> appreciated. So far all my spelunking in documentation and FAQ's have
> not turned out anything that works
>
> Thanks!
>
> Sergio.
>
>

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