TightVNC "Failed to connect to server" issue

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

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.
>
>

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

Sergio,

The 'Allow Local Loopback Connection' is not needed. It is used for secure
tunneling (like SSH) because the actual connection is done from the SSH
server over the loopback address. This is used for tunneling within your
network. Since you are trying to access from the outside and probably will
have no need for SSH tunneling, this feature does not need to be enabled.

Did you have any luck trying from a different client?

-Jon

"Sergio" wrote:

> Jon: Thanks very much for your reply. I think that I have all the
> settings indicated by you in order (port forwarding and such). I assume
> this is the case given that gotomyvnc checks out fine. Just in case it
> was a firewall issue, I retried the whole thing turning off my router
> firewall and my winXP SP2 firewall too and still no dice... Do you
> happen to know what the "Allow Loopback Connections" setting is for?
> That's still a mystery to me... In the meantime, I will try it from a
> couple of different clients just to make sure it's not a client
> problem.
>
> Thanks again for your advice!
>
> Sergio.
>
>

Hi Sergio,

It seems I face the same problem, a client-specific issue preventing that specific client from connecting to the server. Would you please tell me how you solved your problem. Your solution may help my PC connect to the server.

Best Regards,
Dalia

I'm using Real VNC for a remote desktop connection. The problem is that my computer can't be remotely accessed, although all the settings seem to be properly applied. Remote desktop is enabled in advanced system properties, and the VNC option is checked in the windows firewall. For some reason however, the ports 3389 and 5900 are still closed. I'm not using a router. Any idea what the problem might be?
Thanks
Roger