VNC connection closed w/ error 10055
jnw "at" realvnc.com
Thu Sep 29 18:18:01 2005
Try completely removing ZoneAlarm via the Add/Remove Programs dialog. We've
had previous reports of installed third-party firewalls causing problems
even though they weren't actually active.
Wez @ RealVNC Ltd.
> -----Original Message-----
> From: vnc-list-admin "at" realvnc.com
> [mailto:vnc-list-admin "at" realvnc.com] On Behalf Of Collier Hill
> Sent: 29 September 2005 18:02
> To: James Weatherall
> Cc: vnc-list "at" realvnc.com
> Subject: Re: VNC connection closed w/ error 10055
> When i run a netstat -an on the client I get 7 "established"
> one of which is vnc:
> TCP <vnc_client_IP>:3307 <vnc_server_IP>:5900 ESTABLISHED
> netstat -an on the vnc server machine gives me 3
> "established" connections
> with one vnc:
> TCP <vnc_server_IP>:5900 <vnc_client_IP>:3307 ESTABLISHED
> Hard to believe that 7 and 3 established connections
> respectively, could
> cause memory allocation or resource management problems.
> As far as firewalls are concerned, I have the Zone Labs
> firewall installed,
> but have it disabled so as not to interfere with VNC. In
> addition, virus
> scans show my system to be clean.
> Once again, Thanks for any input.
> On 9/28/05, James Weatherall <jnw "at" realvnc.com> wrote:
> > Collier,
> > Error 10055 normally means that there are too many
> connections open on
> > either the server or viewer machine, meaning that the OS
> can't allocate
> > enough memory to manage them all. Try running netstat -an
> on both the
> > server and viewer when you see this error & check how many
> > connections there are to other systems.
> > According to a quick Google search, there are some viruses
> that can cause
> > this error to appear, a Windows 95 resource leak that can,
> and it's also
> > possible that third-party firewalling software might cause
> similar issues
> > if
> > it has memory leaks, or if it exposes bugs in the OS
> > Regards,
> > Wez @ RealVNC Ltd.
> > > -----Original Message-----
> > > From: vnc-list-admin "at" realvnc.com
> > > [mailto:vnc-list-admin "at" realvnc.com] On Behalf Of Collier Hill
> > > Sent: 27 September 2005 21:07
> > > To: vnc-list "at" realvnc.com
> > > Subject: VNC connection closed w/ error 10055
> > >
> > > I have seen a couple of references to this issue in previous
> > > posts, but see
> > > no resolution posted. So, here is my problem.
> > > configuration:
> > > VNC Server 4.1.1 for Windows on Windows 2000 Pro
> > > VNC Client 4.1.1 for Windows on Windows XP Pro
> > > I start the VNC client on XP and successfully authenticate
> > > and connect to
> > > the VNC server. The connection seems to function properly for
> > > 1 - 5 minutes.
> > > Then the connection is automatically closed with the
> following error
> > > message:
> > > VNC Viewer : Question
> > > Unable to wait for socket data: An operation on a socket
> could not be
> > > performed because the system lacked sufficient buffer space
> > > or because a
> > > queue was full. (10055)
> > > Do you wish to attempt to reconnect to <server_ip>? Yes/No
> > > Any attempts to click "Yes" just porduce the same error
> > > message. If I say
> > > "No", I can reconnect and get the exact same behavior.
> > > Thanks in advance for any thoughts.
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