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      Error Number VPN

Troubleshoot & Error number

Error 619:

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 629

Error 629 - The port was disconnected by the remote machine (also re: error 913).

Solution:
1) Make sure the username and password you have entered for the DUNS connection is correct. 
2) Also make sure the phone number is correct. 
3) if calling a server set for 128-bit encryption when you don't have 128-bit encryption installed on client. 
4) if all the entries for RAS are not correct, you may get this error. This would include incorrect settings for the Basic, Server, Script, Security and X.25. 
5) The settings for authentication and encryption on the security tab must match what your ISP requires. 
6) if a new account logs on using PPTP and change password on first logon is enabled. 
7) may be caused if the modem port speed is set below 19,200. 
8) Can be caused by software or modem not being configured properly or being damaged.


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 769
Error Why is Windows VPN reporting error 769 when trying to connect to MacConnect?
This error may occur when attempting to connect to the Internet via a PPPoE (Point-To-Point Protocol over Ethernet) connection, a connection type often used with DSL (Digital Subscriber Line) Internet connections, as a result of a disabled network card.

From the Desktop, right-click My Computer and choose Properties.
Click the Hardware tab and click the Device Manager button.
Once the list populates, use the plus sign (+) beside Network Adapters to expand that branch of the navigation tree.
Find your network card, which will probably have a yellow exclamation mark beside it. Double-click the network card and choose Use This Device (Enable) from the Device Usage drop-down list.
Click OK, close the Device Manager, and try your PPPoE connection again.

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.

To configure router dlink dir600
1st you have to connect through cable one of ports of your router ( dir600 ) to your computer 
2nd type in internet explorer: 192.168.0.1
it shows admin page with user and password
enter username as : admin
password: keep it empty
press enter
and continue to go to configuration
after that you will go to pptp or l2tp connections

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.