Error messages in Network Connections (Windows Server 2003)

Article
10/08/2009

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Error messages

You may receive one or more of the following errors when you use Network Connections. To see more information about an error, click the error.

600 An operation is pending.
601 An invalid port handle was detected.
602 The specified port is already open.
603 The caller's buffer is too small.
604 Incorrect information was specified.
605 The port information cannot be set.
606 The specified port is not connected.
607 An invalid event was detected.
608 A device was specified that does not exist.
609 The device type does not exist.
610 The buffer is invalid.
611 The route is not available.
612 The route is not allocated.
613 Invalid compression specified.
614 Out of buffers.
615 The port was not found.
616 An asynchronous request is pending.
617 The port or device is already disconnecting.
618 The port is not open.
619 A connection to the remote computer could not be established, so the port used for this connection was closed.
620 There are no endpoints.
621 Cannot open the phone book file.
622 Cannot load the phone book file.
623 Cannot find the phone book entry.
624 Cannot write the phone book file.
625 Invalid information found in the phone book.
626 Cannot load a string.
627 Cannot find key.
628 The connection was terminated by the remote computer before it could be completed.
629 The data link was terminated by the remote machine.
630 The port was disconnected due to hardware failure.
631 The port was disconnected by the user.
632 The structure size is incorrect.
633 The port is already in use or is not configured for Remote Access dialout.
634 Cannot register your computer on the remote network.
635 Unknown error.
636 The wrong device is attached to the port.
637 The string could not be converted.
638 The request has timed out.
639 No asynchronous net available.
640 A NetBIOS error has occurred.
641 The server cannot allocate NetBIOS resources needed to support the client.
642 One of your NetBIOS names is already registered on the remote network.
643 A network adapter at the server failed.
644 You will not receive network message popups.
645 Internal authentication error.
646 The account is not permitted to log on at this time of day.
647 The account is disabled.
648 The password has expired.
649 The account does not have Remote Access permission.
650 The Remote Access server is not responding.
651 Your modem (or other device) has reported an error.
652 Unrecognized response from the device.
653 A macro required by the device was not found in the device .INF file section.
654 A command or response in the device .INF file section refers to an undefined macro.
655 The <message> macro was not found in the device .INF file section.
656 The <defaultoff> macro in the device .INF file section contains an undefined macro.
657 The device .INF file could not be opened.
658 The device name in the device .INF or media .INI file is too long.
659 The media .INI file refers to an unknown device name.
660 The device .INF file contains no responses for the command.
661 The device .INF file is missing a command.
662 Attempted to set a macro not listed in the device .INF file section.
663 The media .INI file refers to an unknown device type.
664 Cannot allocate memory.
665 The port is not configured for Remote Access.
666 Your modem (or other device) is not functioning.
667 Cannot read the media .INI file.
668 The connection dropped.
669 The usage parameter in the media .INI file is invalid.
670 Cannot read the section name from the media .INI file.
671 Cannot read the device type from the media .INI file.
672 Cannot read the device name from the media .INI file.
673 Cannot read the usage from the media .INI file.
674 Cannot read the maximum connection BPS rate from the media .INI file.
675 Cannot read the maximum carrier BPS rate from the media .INI file.
676 The line is busy.
677 A person answered instead of a modem.
678 The remote computer did not respond.
679 Cannot detect carrier.
680 There is no dial tone.
681 General error reported by device.
691 Access denied because user name and/or password is invalid on the domain.
692 Hardware failure in port or attached device.
695 The state machines are not started.
696 The state machines are already started.
697 The response looping did not complete.
699 The device response caused buffer overflow.
700 The expanded command in the device .INF file is too long.
701 The device moved to a BPS rate not supported by the COM driver.
703 The connection needs information from you, but the application does not allow user interaction.
704 The callback number is invalid.
705 The authorization state is invalid.
707 There was an error related to the X.25 protocol.
708 The account has expired.
709 Error changing password on domain.
710 Serial overrun errors were detected while communicating with your modem.
711 A configuration error on this computer is preventing this connection.
712 Biplex port is initializing. Wait a few seconds and redial.
713 No active ISDN lines are available.
714 Not enough ISDN channels are available to make the call.
715 Too many errors occurred because of poor phone line quality.
716 The Remote Access IP configuration is unusable.
717 No IP addresses are available in the static pool of Remote Access IP addresses.
718 The connection was terminated because the remote computer did not respond in a timely manner.
719 PPP was terminated by remote machine.
720 A connection to the remote computer could not be established. You might need to change the network settings for this connection.
721 The remote computer did not respond.
722 The PPP packet is invalid.
723 The phone number, including prefix and suffix, is too long.
726 The IPX protocol cannot be used for dial-out on more than one port at a time.
728 Cannot find an IP adapter bound to Remote Access.
729 SLIP cannot be used unless the IP protocol is installed.
731 The protocol is not configured.
732 The PPP negotiation is not converging.
733 A connection to the remote computer could not be completed.
734 The PPP link control protocol was terminated.
735 The requested address was rejected by the server.
736 The remote computer terminated the control protocol.
737 Loopback detected.
738 The server did not assign an address.
739 The remote server cannot use the encrypted password.
740 The TAPI devices configured for Remote Access failed to initialize or were not installed correctly.
741 The local computer does not support encryption.
742 The remote server does not support encryption.
743 The remote server requires encryption.
752 A syntax error was encountered while processing a script.
753 The connection could not be disconnected because it was created by the multi-protocol router.
754 The system could not find the multi-link bundle.
755 The system cannot perform automated dial because this entry has a custom dialer specified.
756 This connection is already being dialed.
757 Remote access services could not be started automatically. Additional information is provided in the event log.
758 Internet Connection Sharing is already enabled on the connection.
760 An error occurred while routing capabilities were being enabled.
761 An error occurred while Internet Connection Sharing was being enabled for the connection.
763 Internet Connection Sharing cannot be enabled. There are two or more LAN connections in addition to the connection to be shared.
764 No smart card reader is installed.
765 Internet Connection Sharing cannot be enabled. A LAN connection is already configured with the IP address required for automatic IP addressing.
766 A certificate could not be found. Connections that use the L2TP protocol over IPSec require the installation of a machine certificate, also known as a computer certificate.
767 Internet Connection Sharing (ICS) cannot be enabled. The LAN connection selected on the private network has more than one IP address configured. Reconfigure the LAN connection with a single IP address before enabling ICS.
768 The connection attempt failed because of failure to encrypt data.
769 The specified destination is not reachable.
770 The remote computer rejected the connection attempt.
771 The connection attempt failed because the network is busy.
772 The remote computer's network hardware is incompatible with the type of call requested.
773 The connection attempt failed because the destination number has changed.
774 The connection attempt failed because of a temporary failure. Try connecting again.
775 The call was blocked by the remote computer.
776 The call could not be connected because the destination has invoked the Do Not Disturb feature.
777 The connection attempt failed because the modem (or other connecting device) on the remote computer is out of order.
778 It was not possible to verify the identity of the server.
779 To dial out using this connection you must use a smart card.
780 An attempted function is not valid for this connection.
781 The encryption attempt failed because no valid certificate was found.
782 Network address translation (NAT) is currently installed as a routing protocol and must be removed before enabling Internet Connection Sharing.
783 Internet Connection Sharing (ICS) cannot be enabled. The LAN connection selected as the private network is either not present, or it is disconnected from the network. Please ensure that the LAN adapter is connected before enabling ICS.
784 You cannot dial using this connection at logon time, because it is configured to use a user name different than the one on the smart card. If you want to use it at logon time, you must configure it to use the user name on the smart card.
785 You cannot dial using this connection at logon time, because it is not configured to use a smart card. If you want to use it at logon time, you must edit the properties of this connection so that it uses a smart card.
786 The L2TP connection attempt failed because there is no valid machine certificate on your computer for security authentication.
787 The L2TP connection attempt failed because the security layer could not authenticate the remote computer.
788 The L2TP connection attempt failed because the security layer could not negotiate compatible parameters with the remote computer.
789 The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.
790 The L2TP connection attempt failed because certificate validation on the remote computer failed.
791 The L2TP connection attempt failed because security policy for the connection was not found.
792 The L2TP connection attempt failed because security negotiation timed out.
793 The L2TP connection attempt failed because an error occurred while negotiating security.
794 The Framed Protocol RADIUS attribute for this user is not PPP.
795 The Tunnel Type RADIUS attribute for this user is not correct.
796 The Service Type RADIUS attribute for this user is neither Framed nor Callback Framed.
797 A connection to the remote computer could not be established because the modem was not found or was busy.
798 A certificate could not be found that can be used with this Extensible Authentication Protocol.
799 Internet Connection Sharing (ICS) cannot be enabled due to an IP address conflict on the network. ICS requires that the host be configured to use 192.168.0.1. Ensure that no other client on the network is configured to use 192.168.0.1.
800 Unable to establish the VPN connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection.
801 This connection is configured to validate the identity of the access server, but Windows cannot verify the digital certificate sent by the server.
802 The card supplied was not recognized. Please check that the card is inserted correctly, and fits tightly.

600

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

601

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

602

The COM port that the network connection attempted to use is already in use by another active network connection or another process (for example, a phone line monitoring program, such as a fax program). Close the application that is blocking the use of the COM port.

603

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

604

The remote access phonebook file and the current Network Connections configuration are probably inconsistent. If you changed your communications equipment (such as your serial port or modem), make sure you reconfigure Network Connections. See Configure a connection to a remote network.

605

If the error persists, delete and re-create the connection in Network Connections.

606

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

607

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

608

If the error persists, delete and re-create the connection in Network Connections.

609

If the error persists, delete and re-create the connection in Network Connections.

610

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

611

Your network configuration is probably incorrect. Restart your computer to make sure that all recent configuration changes have taken effect. If the error persists, check Event Viewer for detailed warnings or errors.

612

Your network configuration is probably incorrect. Restart your computer to make sure that all recent configuration changes have taken effect. This error may also occur if your computer is running low on resources. If the error persists, check Event Viewer for detailed warnings or errors.

613

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

614

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

If the error persists, check Event Viewer for detailed warnings or errors.

615

If the error persists, delete and re-create the connection in Network Connections.

616

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

617

Wait for Network Connections to finish disconnecting.

618

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

619

There are several possible reasons why a connection to the remote computer could not be established:

The remote computer might have been too busy. Wait a few minutes and try the connection again.
If you are trying to establish a dial-up connection, you might have tried to redial before the modem fully disconnected. Wait a short time and try your call again.
If you are trying to establish a connection by using a modem, the modem might not be functioning properly. For more information, see Troubleshooting modems.
If you are using a device such as a router, a hub, or a network adapter for network address translation (NAT), the device might not be functioning properly. If the device provides firewall capabilities, the device might be blocking the connection. Consult the documentation for the device.

620

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

If the error persists, check Event Viewer for detailed warnings or errors.

621

Network Connections uses the Rasphone.pbk file located in the systemroot\System32\Ras folder. Make sure the file is in this folder, and then restart Network Connections.

622

Network Connections uses the Rasphone.pbk file located in the systemroot\System32\Ras folder. Make sure the file is in this folder, and then restart Network Connections.

623

Network Connections located the phone book but cannot find the specified connection entry. This error should not occur unless another application is using the Network Connections phone book and has specified an incorrect connection entry.

624

Network Connections uses the Rasphone.pbk file located in the systemroot\System32\Ras folder. Make sure your disk is not full and that you have permission to change this file.

625

The phonebook file, Rasphone.pbk, may be corrupt. Delete this file from the systemroot\System32\Ras folder, and then restart Network Connections to create a new one.

626

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

If the error persists, check Event Viewer for detailed warnings or errors.

627

One of the Network Connections configuration files probably contains invalid information. If you are using a modem that is not supported, install a supported modem.

628

The connection could not be completed because the connection attempt was terminated by the remote computer. Try the following:

If you are trying to establish a dial-up connection, make sure that the phone number you are dialing is correct. Try dialing this phone number from your telephone. For more information, see Configure a connection to a remote network.
If you are trying to establish a connection by using a modem, you might need to change the modem settings. For more information, see Troubleshooting modems.
If you are trying to establish a connection to a virtual private network (VPN), you might need to change the security settings for this type of connection. For more information, see VPN connection authentication and data encryption, or contact the system administrator for the VPN to which you are trying to connect.

629

The connection link disconnected for one of the following reasons:

An unrecoverable phone line error.
A noisy line.
Disconnection by the system administrator.
Failure to negotiate correctly with the modem on the remote computer at the selected speed.

To reestablish the connection, click Redial. You can also enable automatic redialing on the Options tab for the connection. If this error persists, reduce the modem speed for the connection to 9600 bps, and then try to redial. See Change the maximum modem port speed.

You can try to connect to another computer to determine if the problem is related to the particular computer you are calling. Also, you can try connecting to the original computer from another phone line.

If the problem persists, contact the system administrator of the remote computer.

630

The link disconnected for one of the following reasons:

An unrecoverable error occurred in your modem (or other communication device).
An unrecoverable error occurred on your communications port.
Your modem cable is unplugged.

To diagnose and correct the problem, do the following:

Make sure your modem is on and your cable is securely attached.
Make sure your modem is functioning properly. For instructions on testing your modem, see Test a modem.

631

An action on your computer disconnected the line. Redial.

632

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

If the error persists, check Event Viewer for detailed warnings or errors.

633

If this is a dial-up connection, the COM port that the network connection attempted to use is already in use by another active network connection or another process (for example, a phone line monitoring program, such as a fax program). Close the application that is blocking the use of the COM port. For more information about troubleshooting modem problems, see Troubleshooting modems.

If this is a virtual private network (VPN) connection, the VPN device that the network connection attempted to use cannot be opened. If the problem persists, contact your system administrator.

If this is a broadband connection, the broadband device that the network connection attempted to use cannot be opened. Make sure that the required hardware, such as a cable modem, is functioning properly. For more information about required hardware, contact your broadband service provider.

634

The remote access server cannot register the name of your computer on the network. This generally occurs with the NetBIOS protocol, but it may also occur with TCP/IP or IPX protocols. Typically, the error occurs when an address is already in use on the network. Contact your system administrator.

635

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

If the error persists, check Event Viewer for detailed warnings or errors.

636

Your hardware configuration and the configuration settings for your connection are probably inconsistent with each other. If you changed your communications equipment (such as a serial port or modem), make sure you reconfigure the connection. See To configure a connection to a remote network.

637

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

638

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

639

Your NetBIOS network configuration is probably incorrect. Restart your computer to make sure that all recent configuration changes have taken effect. If the error persists, check Event Viewer for detailed warnings or errors.

If you call for help, record the Fail Code (a NetBIOS error code) and give it to the technical support staff.

640

The modem cannot negotiate a connection at the speed that is set. Set the modem to a lower initial speed, and then redial. See Change the maximum modem port speed. Also, try disabling modem compression and software compression. See Configure a modem for a dial-up connection or Disable software compression.

If you still cannot make a connection, try adding the NWLink IPX/SPX/NetBIOS Compatible Transport Protocol to the connection. See Add a network component.

641

Ask your system administrator to increase the resource capacity of the remote access server, or use Services in Computer Management to stop nonessential services on your computer, such as messenger services and Network DDE.

642

Another computer with the same computer name is already logged on to the remote network. Each computer on the network must be registered with a unique name. Verify the following:

A computer with the same computer name as yours is not located on the network you are attempting to connect to.
Your computer is not already physically attached to the network that you are attempting to connect to.

643

Report this error to your system administrator.

644

Another computer that is already connected to the network is using your messaging name. Messages addressed to you are sent to that computer. If you want to receive messages at your remote workstation, you must log off your office computer before you dial in to the network the next time.

This error does not affect messaging through Microsoft Outlook, Microsoft Outlook Express, or Microsoft Exchange.

645

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

646

Your account is configured for limited access to the network. If you need to access the network at a different time of day than what is presently configured, ask your system administrator to change the configuration.

647

The user account is disabled. This may be due to repeated failed logon attempts or because the system administrator disabled the account for security reasons. Ask your system administrator to enable your account in Local Users and Groups.

648

If you connect through Network Connections, you are automatically prompted to change your password. If you connect by using the rasdial command, you can change your password by doing the following:

Press CTRL+ALT+DEL.
Click Change Password, and then follow the instructions on the screen.

If you belong to an administrators group and your password expires, another administrator must change your password. You cannot change the password yourself.

649

The account does not have permission to connect for one of the following reasons:

You have a valid account on the domain you selected, but your account does not have permission to access the network remotely. Ask your system administrator to enable dial-up permission for your user account or to enable dial-up permission in Routing and Remote Access.
Your account has expired, been disabled, or is locked out, or your dial-up access has been locked out.
You are either attempting to connect outside of allowable server logon hours or attempting to connect outside of the times allowed for dial-up access, or the policy that applies to your account may not allow dial-up access.
A caller ID rule may prevent you from connecting. For example, your account may be required to dial in from a specific number.
The remote computer may allow only local accounts to connect.
An authentication protocol may be required that your computer cannot negotiate, or your computer may be attempting to use a protocol that is not authorized by the policy on the remote computer.

If you have an account with dial-in permission on another domain, do the following to use your account on that domain:

Right-click the connection, and then click Properties.
On the Options tab, select the Prompt for name and password, certificate, etc. and Include Windows logon domain check boxes.
On the Security tab, clear the Automatically use my Windows logon name and password (and domain if any) check box, and then click OK.
Double-click the connection, and then click Dial.
Specify the appropriate user name, password, and domain.

650

One of the following may have caused this error:

The remote access server is not running. Contact your system administrator to make sure the server is running.
The line may be too noisy, or your modem may have failed to negotiate correctly with the modem of the remote access server at the selected speed. For either of these possibilities, lower the initial speed (bps) of the modem, and then redial. See Change the maximum modem port speed.
The serial cable of your modem may need replacing.
The authentication settings for the connection may be incorrect. Contact your system administrator to make sure that your authentication settings meet those required by the remote access server.
The software compression and modem hardware compression for the remote access server may be enabled at the same time. Generally, the remote access server software compression is enabled and hardware compression is disabled.

651

Your modem (or other device) reported an error.

If this is a dial-up connection and you are using a supported external modem, turn off and then restart the modem. Close and restart Network Connections, and then redial. If your modem is not supported by Network Connections, switch to a supported modem. Make sure you correctly configured your modem for remote access. To check your configuration, see Configure a connection to a remote network.

If this is a virtual private network (VPN) connection, you may have specified an incorrect TCP/IP address in the connection configuration, or the server that you are trying to reach may not be available. To determine if the server is available, contact your system administrator.

652

Your modem (or other device) returned a message that is not listed in one or more of your script files (Pad.inf, Switch.inf, or FileName.scp).

If you are using a supported external modem, turn off and restart the modem, and then redial.

If the problem persists, try connecting at a lower initial speed. See Change the maximum modem port speed.

653

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

654

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

655

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

656

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

657

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

658

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

659

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

660

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

661

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

662

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

663

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

664

The system is out of memory. Close some programs, and then redial.

665

If the device is already being used for another connection, hang up that connection.

Modify the connection to use another device. See Configure a connection to a remote network.

666

Your modem (or other device) is not responding for one of the following reasons:

The external modem is turned off.
The modem is not securely connected to your computer. Make sure the cable is securely fastened to both the modem and the computer.
The serial cable does not meet the specifications required by Network Connections.
The modem has experienced a hardware problem. Turn off the modem, wait for 20 seconds, and then restart the modem.

667

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

668

Redial the connection. If you continue to receive this message, reduce the initial speed of the modem and turn off advanced modem features, such as software compression. See Change the maximum modem port speed or Disable software compression.

Also, you should confirm that the modem is compatible.

If you are dialing manually, make sure you are connected before you click Done. You are dialing manually if you selected Operator-Assisted Dialing on the Advanced menu in the Network Connections folder.

669

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

670

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

671

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

672

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

673

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

674

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

675

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

676

Redial the number. You can automate redialing on the Options tab in the properties of the connection. See Configuring redial options. If this is a virtual private network (VPN) connection, check the host name or IP address of your destination server, and try to connect again. Also, contact your system administrator to verify that the remote server is running.

677

A modem or other device did not pick up the phone. Check the number and dial again. If this is a virtual private network (VPN) connection, check the host name or IP address of your destination server, and try to connect again.

678

The connection could not be completed because the remote computer did not answer the connection request. Try the following:

If you are trying to establish a dial-up connection, make sure that the phone number you are dialing is correct. Try dialing this phone number from your telephone. For more information, see Configure a connection to a remote network.
If you are trying to establish a connection by using a modem, make sure the modem is functioning properly. For more information, see Troubleshooting modems.
If you are trying to establish a connection to a virtual private network (VPN), make sure that the host name or the IP address of your destination server is correct, and try again to establish the connection. To view the properties of a connection, right-click the connection, click Properties, and review the information on the General tab. For more information, contact the system administrator for the VPN to which you are trying to connect.
If you are trying to establish a connection to a VPN, network congestion or a network device (such as a firewall) might be blocking your attempt to make a connection. For more information, contact the system administrator for the VPN to which you are trying to connect.
If you are trying to establish a broadband connection, make sure the service name is correct and try again to establish the connection. To view the properties of a connection, right-click the connection, click Properties, and review the information on the General tab. For more information, contact your broadband service provider.
If you are trying to establish a broadband connection, make sure that the necessary hardware (such as a cable modem) is installed and functioning properly. For more information, contact your broadband service provider.

679

A modem or other device did not pick up the phone. Many modems return this error if the remote modem does not pick up the phone. Check the number and dial again. If this is a virtual private network (VPN) connection, check the host name or IP address of your destination server, and try to connect again. You can automate redialing on the Options tab in the properties of the connection. See Configuring redial options.

680

A phone line may be incorrectly connected to your modem or disconnected from your modem. The number may require a prefix, such as 9, to access external lines, or the number may be too long.

Make sure that the phone line is plugged into the correct socket in the modem. Also, make sure you added any special access numbers, such as the prefix 9 followed by a comma, to connect to an outside line (for example: 9,555-0100). For more information, see Configure phone number modifiers.

Check that there is no stutter tone, which indicates voicemail messages, on your phone line.

Many modems cannot dial more than 34 digits. When longer numbers are encountered, these modems split them into two or more parts, of which only the first part is dialed. This occurs with USRobotics and Multitech modems. The only known solution for this problem is to use another brand of modem.

For more information, see Technical support options.

681

One of the Network Connections configuration files probably contains information that is not valid.

If your modem is not supported by Network Connections, switch to a supported modem.

691

Either your user account is not registered with the domain listed, your password is expired, or you mistyped the information. If you do not specify a domain, the remote access server attempts to verify your user name and password on the domain of which it is a member.

Carefully retype your user name, password, and domain. If you are unsure of this information, contact your system administrator.

692

Your modem (or other device) is not responding because of the following:

The modem is turned off, malfunctioning, or is not securely connected to your computer.

To resolve this problem, do the following:

Reset your modem. For more information, consult your modem documentation.
If you are using an external modem, ensure that you are using a proper serial cable and that it is connected securely. You may want to try replacing the modem cable. Also, if you are using an adapter to connect your external modem to your serial port, ensure that the adapter is wired properly for modem communication. For example, a 9-to-25 pin adapter for a mouse does not work properly with a serial network connection.
Test the serial port or multiport adapter, and replace it if necessary.
Ensure that the handshaking options for the modem are configured properly. Consult your modem documentation for information about different handshaking options available for your modem.
If your modem is not supported by Network Connections, switch to a supported modem.
Verify that another application, such as HyperTerminal, is not using the communications port. If the port is being used, subsequently starting Network Connections may cause this message to appear.
For more information, see Technical support options.

695

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

696

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

697

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

699

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

700

Commands in script files cannot exceed 256 characters. Break up the command into multiple commands. See Automating the Dial-up Logon Process by Using Switch.inf Scripts.

701

Your modem tried to connect at a speed that the serial port cannot interpret. Reset your initial speed to the next lowest standard bps rate. See Change the maximum modem port speed.

703

The server you are attempting to connect to requires user interaction. The rasdial command, or the application you are using that is attempting to dial, does not support user interaction.

If possible, try to connect by using an existing connection in the Network Connections folder.

If you are using scripting to connect, try using a dial-up connection that is configured with the Terminal feature. The Terminal window may enable the user interaction that is required. See Use the Terminal feature to log on to a remote computer.

704

The callback number that you specified for the client is not valid. Check to make sure the callback number has been typed correctly, including area code.

705

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

707

The X.25 connection returned an error. Ask your X.25 provider to interpret the diagnostic information that is provided.

708

Ask your system administrator to reactivate your account.

709

Try changing your password again. If you continue to receive this message, report it to your system administrator.

710

Lower the modem's initial speed (bits per second), and then redial. See Change the maximum modem port speed.

711

A connection could not be established because a required service was not started on your computer. Make sure the following services are started on your computer and try again to establish the connection:

Plug and Play
Remote Access Auto Connection Manager

For information about how to start a service, see Start, stop, pause, resume, or restart a service.

712

This error can occur on a connection that is configured to receive calls (biplex connection). It happens when you dial out at the same time the server is initializing the connection for receiving calls. Network Connections redials in a few seconds.

713

Make sure that your ISDN line is plugged in correctly and that the terminating resistors are installed correctly (see the documentation for your ISDN card), and then redial. If you still receive this error, contact customer service for the ISDN card vendor or your ISDN telephone company.

714

All of the available ISDN channels are busy. Typically, ISDN provided in the BRI (Basic Rate Interface) level of service offers two channels on which voice or data calls can be made. If both channels are in use, Network Connections is not able to dial out. Hang up one channel and then redial.

715

Too many asynchronous errors occurred on your phone line during authentication. Try again. If the problem persists, lower your baud rate and disable any modem features that are set. See Change the maximum modem port speed and Configure an installed modem.

716

There is a problem with the TCP/IP configuration on the remote access server. For example, your connection is requesting a TCP/IP address from the server that is not usable.

Contact your system administrator to verify the TCP/IP settings on your server.

717

Try to use an IP address that does not cause a conflict on the remote network. If possible, use DHCP to avoid addressing conflicts. See Configure TCP/IP settings.

718

A Point to Point Protocol (PPP) connection was initiated but could not be completed because the remote computer did not respond in a timely manner or it did not give a valid response. This can occur for any of several reasons:

If you are trying to establish a connection to a virtual private network (VPN), try entering your domain name and your user name in User name as follows: DOMAIN\username, and try again to establish the connection.
If you are trying to establish a connection to a remote network, network congestion or a network device (such as a firewall) might be blocking your attempt to make a connection. Try your connection later, or contact the administrator of the remote network for more information.
You might need to install updated drivers for your modem, your network card, or another connection device. For more information, contact your hardware manufacturer.

719

A PPP conversation started, but it was terminated at the request of the remote computer. An error probably occurred on the server.

720

A connection could not be established because the Point to Point Protocol (PPP) settings on your computer and on the remote computer do not match. Try the following:

Make sure that TCP/IP is installed and enabled for this type of connection. For more information, see Enable a network component.
Make sure that all protocols needed to establish this type of connection are installed. For more information, see PPP operation and protocols.
Contact the administrator of the remote computer for more information about establishing this type of connection.

721

The connection could not be established because the remote computer did not respond to the connection request. Try the following:

Make sure that your modem is functioning properly. For more information, see Troubleshooting modems.
Make sure that TCP/IP is installed and configured correctly for this connection. For more information, see Connect to the Internet by using PPPoE.
This connection might require a Terminal window. For more information on enabling a Terminal window, see Use the Terminal feature to log on to a remote computer.
If you are trying to establish a virtual private network (VPN) connection, make sure that the host name or the IP address of your destination server is correct and try the connection again. To check this information, right-click the connection, click Properties, and review the information on the General tab.

722

A PPP packet was received that was not in a valid format. Your system administrator may need to log PPP events to a file to solve the problem. For more information, see Support resources.

723

The maximum length of the phone number, including prefix and suffix, is 128 characters.

726

Only one connection can be used to dial out by using the IPX protocol.

728

There is a problem with the TCP/IP configuration. Restart your computer to ensure that all recent configuration changes have taken effect.

729

Verify that TCP/IP is installed. For more information, see Add a network component.

731

Specific information was requested on a PPP control protocol that is not configured. To identify the PPP negotiation problem, ask your system administrator to enable PPP logging by using the Netsh.exe utility.

732

PPP parameter negotiation did not succeed because the local and remote computers did not agree on a common set of parameters. Contact your system administrator to verify the configuration of network protocols such as TCP/IP or IPX. Also, your system administrator can enable PPP logging by using the Netsh.exe utility, which may help identify the PPP negotiation problem.

733

The connection could not be completed because your computer and the remote computer could not negotiate PPP control protocols. Try the following:

Make sure that all network components necessary for the connection are installed and configured for the connection type. For more information, see Add a network component and Configure a connection to a remote network.
Enable or disable multi-link negotiation for the connection. To configure multi-link, open the Network Connections folder, right-click the icon for the connection, click Properties, click the Networking tab, and click Settings.

734

The PPP link control protocol was terminated. There are several possible causes. Try the following:

Your Internet service provider might have experienced a problem. Contact your Internet service provider.
The security protocols on the server to which you are trying to connect are incompatible with your security settings. In Network Connections, right-click the connection you are using. Click Properties, and click the Security tab. In Validate my identity as follows, select Allow unsecured password.
LCP extensions are not supported. In Network Connections, right-click the connection you are using. Click Properties, and click the Networking tab. Click Settings, and clear the Enable LCP extension check box.

735

Your connection is configured to request a specific IP address. Either the server is not configured to permit clients that request specific IP addresses, or the specific IP address may already be in use by another client. If possible, use DHCP to avoid addressing conflicts. See Configure TCP/IP settings.

736

A PPP network control protocol conversation started, but it was terminated at the request of the remote computer. An error probably occurred on the server. See your system administrator. Also, your system administrator can enable PPP logging by using the Netsh.exe utility, which may help to identify the PPP negotiation problem.

737

The local and remote computers that are involved in the PPP conversation are the same computer. This usually means that a device (for example, a modem) on the link is echoing characters back. Try resetting these devices.

For other servers from other vendors, it may indicate that the remote computer is attempting a teletypewriter (TTY) logon before connecting. You can configure the connection for a post-connect terminal on the Security tab.

738

The server cannot assign an IP address to your computer from the pool of allocated addresses. Ask your system administrator to configure the connection to use a specific IP address on the client that does not cause a conflict on the remote network. Or, if possible, use DHCP to avoid addressing conflicts. See Configure TCP/IP settings.

739

This error occurs only when making a PPP connection to a server that is not running Windows. The standard PPP authentication protocols, used for interoperating with other servers, require that the password is available in plaintext form. Servers that are running Windows store only the encrypted form for security.

740

The TAPI devices configured for Network Connections failed to initialize or are not installed correctly. Restart your computer to make sure that all recent configuration changes have taken effect. If the error persists, check Event Viewer for detailed warnings or errors.

741

This error may be resolved by either selecting or clearing the Require data encryption (disconnect if none) check box located on the Security tab. Check with your system administrator regarding client-side security settings.

This error may also occur if your password is longer than 14 characters, you selected the Require data encryption (disconnect if none) check box on the Security tab, and you selected the Require secured password check box in Validate my identity as follows. Use a password less than 14 characters, clear the Require data encryption (disconnect if none) check box, and clear the Allow unsecured password check box in Validate my identity as follows.

See Configure a connection to a remote network and VPN connection authentication and data encryption.

742

The required level of encryption is not available on the remote computer. One computer is probably using 128-bit encryption technology while the other is using 40-bit or 56-bit encryption. Contact your system administrator to determine your level of encryption and to verify that the server is using the same level of encryption. For more information, see Data encryption.

743

The remote access server requires encryption, but your connection is not enabled for encryption. See Configure identity authentication and data encryption settings.

751

An invalid callback number has been specified. Only the characters 0 to 9, T, P, W, (, ), -, @, and space are allowed in the number. Enter the correct number and redial.

752

A syntax error was encountered while processing a script. See Automating the Dial-up Logon Process by Using Switch.inf Scripts and Troubleshooting logon scripts.

753

This connection is being used by Routing and Remote Access. Use the Routing and Remote Access service to terminate the connection. The connection appears in either the list of routing interfaces or the list of remote access clients.

754

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.

For more information about diagnosing a problem, click Start, and then click Help and Support.

755

Contact your system administrator.

756

Wait and try again later.

757

An internal error occurred.

Check the networking configurations for your computer.
Make sure all devices are functional.
For more information about diagnosing a problem, click Start, and then click Help and Support.

If the error persists, check the Event Viewer for detailed warnings or errors.

758

This error may occur if an application enables Internet Connection Sharing while the properties of the connection are open, and then you try to enable the feature. Close and then reopen the properties of the connection. The Enable Internet Connection Sharing check box on the Advanced tab should be selected.

760

An internal error occurred while attempting to enable routing. Contact your system administrator.

761

An internal error occurred while Internet Connection Sharing was being enabled. Contact your system administrator.

763

Close and reopen the properties of the connection. The Enable Internet Connection Sharing check box on the Advanced tab should be selected. Select a LAN connection from the list.

764

Install a smart card reader.

765

Internet Connection Sharing configures the LAN connection of the home network or small office network with a static address. Another network adapter in the system is configured with the same address. Change the static address of the network adapter before enabling Internet Connection Sharing.

766

Contact your system administrator. If you are a member of an Active Directory domain and need to request a certificate, see Request a certificate. If you are not a member of an Active Directory domain or you need to request a certificate from the Internet, see Submit a user certificate request via the Web.

767

Remove the additional static IP addresses, or reconfigure the LAN connection for DHCP. See Configure TCP/IP settings.

768

If encryption is not necessary, disable encryption and try again. See Configure identity authentication and data encryption settings.

769

Either you specified a destination address that is not valid, or your remote access server is down. Check the destination address and try again.

770

The remote computer may be rejecting your connection because of a caller ID rule or another hardware setting.

771

Wait and try again later.

772

Contact your system administrator.

773

Enter the correct number and try again.

774

Wait and try again later. This error may indicate a timing issue or a problem with the remote computer.

775

The remote computer may be blocking your connection because of a caller ID rule, a scheduling policy that allows access only during specific times, or another setting.

776

Contact your system administrator.

777

Contact your system administrator.

778

In the authentication process, the server identifies itself to your computer, and your computer identifies itself to the server. When this error occurs, your computer is not recognizing the server.

779

Install a smart card reader. See Install a smart card reader on a computer.

780

An internal error occurred. Contact your system administrator. You may need to configure the connection for EAP.

781

This L2TP/IPSec connection requires a valid certificate to be installed on your computer, and no such certificate was found. Try the following:

If you are a member of an Active Directory domain, request a certificate from the appropriate certification authority. For more information, see Request a certificate.
If you want to request a certificate from the Internet, see Submit a user certificate request via the Web.
If you want more information about certificates, see Smart card and other certificate authentication.
If this connection requires a preshared key, contact your network administrator.

782

Remove the Network Address Translation (NAT) routing protocol. See Delete an IP routing protocol.

783

Before you enable Internet Connection Sharing, verify that the LAN adapter and its associated cabling are securely connected.

784

Configure the connection to use the same name as the smart card. Open the properties of the connection. On the Security tab, click Advanced (custom settings) and Settings. Click Smart Card or other Certificate (encryption enabled), click Properties, and then clear the Use a different user name for the connection check box.

785

Configure the connection to use a smart card. See Enable smart card or other certificate authentication.

786

Contact the administrator of the remote network. Your connection may be failing for one or more of the following reasons:

Your computer’s certificate is invalid, is expired, or lacks the preshared key that it needs.
None of your computer’s certificates are trusted by the server.
Your computer is using a preshared key that is not valid. Try using another pre-shared key.

If you are a member of an Active Directory domain and need to request a certificate, see Request a certificate. If you are not a member of an Active Directory domain or you need to request a certificate from the Internet, see Submit a user certificate request via the Web. For more information about remote access security, see How security works at connection.

787

Contact your system administrator. Your connection may be failing for one or more of the following reasons:

Your user name and password credentials are incorrect.
The certificate your computer is using expired.
The certificate the server is using expired.

788

Contact your system administrator. The current configuration of L2TP parameters is not compatible with the Microsoft implementation of L2TP.

789

Contact your system administrator.

790

Contact your system administrator. Your connection may be failing for one or more of the following reasons:

The server you are reaching does not have a certificate.
The server you are reaching does not have the correct certificate.
Your connection is not configured to use the correct certificate.

791

Contact your system administrator. Your connection may be failing for one or more of the following reasons:

The remote server may be offline.
The server you are reaching does not have the correct credentials.
Your connection is not configured with the correct credentials.

792

Check your connection for connectivity to the Internet. If the connection is working, contact your system administrator. Your connection may be failing for one or more of the following reasons:

The remote server may be offline.
The server you are reaching does not have the correct credentials.
Your connection is not configured with the correct credentials.
Your connection is configured to use a different security method than the remote computer. Try changing the type of VPN connection. To change the type of VPN connection, right-click the connection, click Properties, and review the information on the Networking tab.

793

Contact your system administrator. Your connection may be failing for one or more of the following reasons:

The remote server may be offline.
The server you are reaching does not have the correct credentials.
Your connection is not configured with the correct credentials.
Your computer is using a preshared key that is not valid. Try using another pre-shared key.

For more information about remote access security, see How security works at connection.

794

An attribute on the remote network must be configured to allow this connection. Contact the system administrator of the remote network.

795

An attribute on the remote network must be configured to allow this connection. Contact the system administrator of the remote network.

796

An attribute on the remote network must be configured to allow this connection. Contact the system administrator of the remote network.

797

This connection requires a modem. Try the following:

Close all other programs and try again to establish the connection. Another program might be using the modem or the communication port to which the modem is attached.
Make sure that a modem has been installed on your computer. For more information, see Install a modem.
Make sure that the modem is functioning correctly. For more information, see Troubleshooting modems.

798

Contact your system administrator. If you are a member of an Active Directory domain and need to request a certificate, see To request a certificate. If you are not a member of an Active Directory domain or you need to request a certificate from the Internet, see Submit a user certificate request via the Web.

799

Check the IP address settings on all computers connected to the local network, and reconfigure them if necessary. See Configure TCP/IP settings.

800

The connection to the VPN server could not be established using either PPTP or L2TP. One or more of the following circumstances might have caused this error:

The PPTP server is not reachable. The server name you supplied might not exist, or a network component (such as a firewall) might be blocking PPTP traffic.
Verify whether the PPTP server name for this connection is correct. To check your configuration, see Configure a connection to a remote network.
Check whether Internet Connection Firewall has been enabled for this connection. For more information, see Set up and Manage Internet Connection Firewall (ICF).
Contact your system administrator for additional support.

The L2TP/IPSec server is not reachable. The server name you supplied might not exist. Your connection configuration might prevent IPSec from establishing a secure channel with the server. A network component such as Network Address Translation (NAT) or a firewall might be blocking IPSec traffic.

Verify whether the L2TP server name is correct and that the connection you are trying to use has been configured correctly for your computer. To check your configuration, see Configure a connection to a remote network.
Verify whether you have a current machine certificate or that the preshared key is correct. For more information, see Enable smart card or other certificate authentication.
Check whether Internet Connection Firewall has been enabled for this connection. For more information, see Set up and Manage Internet Connection Firewall (ICF).
Contact your system administrator for additional support.

801

However, the digital certificate the server sent cannot be verified. One or more of the following circumstances might have caused this error.

The root of the certificate chain that sent by the server is not available for the local system to verify.
You have specified the server and the trusted root certification authority for your local system. The client computer cannot find or authenticate the root certification authority, which is probably missing and thus generating an error.
If the server is not part of a domain, it might not have a root certification authority.

To resolve this problem:

Ensure that you obtain the root certificate and distribute it to any user and computer that needs to establish trust in the root authority.
Using Group Policy, verify whether the policy settings for your trusted root certification authority are appropriate. For more information, see Policies to establish trust of root certification authorities.
Contact your system administrator for additional support.

802

The smart card that you are using could not be recognized. One or more of the following circumstances might have caused this error.

The smart card is not inserted properly. For example, it might be inserted upside down.
The smart card reader is not installed properly.
If you are using cryptographic service provider (CSP) software, it might be corrupted or not installed properly.

To resolve this problem:

Insert the smart card properly so that it fits tightly in the smart card reader.
Insert that the smart card with the correct side up. See instructions on the smart card reader to ensure that the smart card is inserted with the correct side facing up.
Verify that the smart card reader is installed properly. For more information, see Install a smart card reader on a computer.
Ensure that you are using the correct CSP and that it is installed properly. For more information, see Set up a smart card for user logon or Key type and cryptographic service provider type.
Contact your system administrator for additional support.

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Error messages in Network Connections (Windows Server 2003)

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