VPN Error 619: The port
was disconnected
Solution:
1) Make sure that port
1723 and IP Protocol 47
(GRE) are opened.
Disable your windows
firewall.
2) Make sure no other
secure software blocks
your access, for
example, if you use
Norton secure software,
you may need to add the
remote client's IP so
that the client can
access.
Error 628: The port is
disconnected or The
connection was
terminated by the remote
computer before it could
be completed. This is
most likely a modem or
phone line
noise issue or blocking
port issue.
Solution:
1) make sure you have
good phone line.
2) Upgrade the
modem/router firmware.
3) Make sure you logon
using the correct
username or password or
try different username.
4) Reinstall the modem.
5) Check the
router/firewall
settings.
6) Make sure the router
is VPN pass through or
GRE is enabled.
Error 630:
The port was
disconnected due to
hardware failure.
Solution:
1) Check that the modem
is plugged in, and if
necessary, turn the
modem off, and then turn
it back on.
2) Check if your modem
is being given a bad
init string - with a
command that it does not
support.
3) Check if another
program is already using
the modem, or, if the
modem or serial port's
resources configuration
is incorrect.
4) Reboot your computer
and try it again.
5) If that doesn't work,
go to Start -> Settings
-> Control Panel ->
Modems -> Diagnostics
and get More Info from
your modem. If it fails,
your modem driver is
corrupt and needs to be
re-installed.
6) Update the modem
drivers.
Error 633:
Modem is already in use,
or is not configured for
Remote Access dial out
or The port is in use.
Solution:
1) Verify no other
applications that are
using the modem. You can
open Task Manager to
check that by press
CTRL+ALT+DEL. Another
way to test it is reboot
the computer.
2) This behavior may
occur when another
device with a driver,
for example outdated
Palm Pilot software,
conflicts with the
modem.
3) Telephone.ini or
unimdm.tsp is missing or
damaged.
4) Make sure the modem
is setup correctly and
may apply SP.
5) Removing and
reinstalling it, or
apply the new drive may
fix the problem.
6) Make sure no two ISDN
installed on the same
machine and attempt to
connect to the same
server.
Error 638:
Remote PPP peer or
computer is not
responding.
Solution:
If you have tried many
thing other people
suggest like rebooting,
reloading hardware and
re-installing the VPN or
dial in connection, you
still get the same
problem. I will suggest
to check the router
settings and make sure
TCP Port 1723, IP
Protocol 47 (GRE) are
opened. Also make sure
that the router has the
PPTP enabled and not
firewall block the
traffic. On the RAS
server, check the DHCP
settings.
Error 645:
Internal authentication
error (also re: error
913), or Dial-Up
Networking could not
complete the connection
to the server.
Solution:
1) Make sure you are
entering your correct
username and password
when connecting.
2) Uninstall and
reinstall the Dial Up
adapter.
Error 678:
There was not answer.
Solution:
1) Make sure you have
good connection.
2) If using VPN, make
sure the port 1723 and
IP Protocol 47 (GRE) are
opened.
Error 691:
Access denied because
username and/or password
is invalid on the
domain.
Solution:
1) Verify the logon ID
and password are
correct.
2) Turn off your windows
firewall (Control
Panel>Windows Firewall)
3) Check your Antivirus
firewall, it should be
allowed to VPN software.
Error 721:
Remote PPP peer or
computer is not
responding.
Solution:
Switch from PPTP to
L2TP.
Error 732:
The PPP negotiation is
not converging.
Solution:
Make sure you have good
connection.
Error 741 - 789:
The local computer does
not support the required
encryption type.
Solution:
1) Make sure you enter
correct password.
2) Check that you
selected IPSec VPN in
connection setting and
your preshared-key is
correct (for manual
connection in L2TP).
3) Switch from L2TP to
PPTP.
Error 792:
The L2TP Connection
Attempt failed because
security negotiation
timed out.
Solution:
1) Check that you
selected IPSec VPN in
connection setting and
your preshared-key is
correct.
2) Switch from L2TP to
PPTP.
Error 800:
Unable to establish the
VPN connection. The VPN
server may be
un-reachable, or
security parameters may
not be configured
properly for this
connection.
Solution:
1) Make sure no other
secure software blocks
your access, for
example, if you use
Norton secure software,
you may need to add the
remote client's IP so
that the client can
access.
2) If you can establish
the VPN from the desktop
at home but not from the
laptop. Make sure no
security software like
Microsoft OneCare
software that blocks the
GRE.
Error 806:
A connection between
your computer and the
VPN server has been
established but the VPN
connection cannot be
completed. The most
common cause for this is
that there is at least
one internet device
between your computer
and the VPN server is
not configured to allow
GRE protocol packets
Verify that protocol 47
GRE is allowed on all
personal firewall
devices or routers. if
the problem persists,
contact your
administrator.
Solution:
1) Make sure you can
reach the VPN server by
using ping. Sometimes,
poor connection can
cause this issue too.
2) Make sure other
secure software blocks
your access, for
example, if you use
Norton secure software,
you may need to add the
remote client's IP so
that the client can
access
Vista with Live OneCare
Installed - Could Block
VPN:
Windows Live OneCare
replaces the existing
built-in firewall and
although applications
are enabled by default
for communication,
certain required ports
aren't. Thus, when you
attempt to create a VPN
connection to a network,
the process will appear
to hang, then fail, at
the username and
password authentication
stage. To resolve the
problem, perform these
steps:
Solution:
1) Start the Windows
Live OneCare console
(right-click the OneCare
taskbar icon, which is
normally a green circle
with 1 in it, and select
"Open Windows Live
OneCare").
2) On the left side of
the OneCare dialog box
under Other Tasks, click
the "View or change
settings" link.
3) On the "Windows Live
OneCare Settings" dialog
box, select the Firewall
tab.
4) Click the "Advanced
settings" button.
5) Select the "Ports and
Protocols" tab on the
"Advanced settings"
dialog box.
6) Select the "VPN -
General Routing
Encapsulation (GRE)"
check box.
7) Click OK to all open
dialog boxes.
Mcafee Plus Internet
Security - Could Block
VPN:
Solution:
1) Begin by opening the
mcafee security center
by right clicking on the
Mcafee icon near the
system tray (the clock
in the lower right of
the screen.) You will
need to click on
"Advanced Menu".
2) Next, on the left
panel of Mcafee Security
Center. Click
"Configure", then
"Internet & Network".
Afterwards, click the
"Advanced" button.
3) Next, on the left
hand side of the window,
select "Trusted and
Banned IPs & Click Add".
4) Add a single IP
address, th server IP
address. In the
description field, you
can add any description
you would like to
describe the connection.
When you are done, click
the OK button. After
closing the Security
Center, you should now
be able to connect to
the VPN.
Norton Internet Security
- Could Block VPN:
Solution:
1) Begin by opening the
Norton program window by
double clicking on the
icon in your system tray
(in the lower left of
your screen near your
clock). Next, you will
need to click on
"Options" and then
"Norton Internet
Security".
2) Next, click on
"Personal Firewall" and
"Trust Control" and then
click on the "Trusted"
tab. Click the "Add"
button.
3) Add the IP address
for the VPN server.
Next, Click the Ok
button.
4) Finally, click the OK
button to apply the
settings. After closing
the Security Center, you
should now be able to
connect to the VPN.