You may receive one or more of the following errors when you use Network and Dial-up Connections. To see more information about an error, click the error. NOTE : Some solutions indicate to re-install DUNs and/or TCP/IP. See this Base on Windows 2000
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 is detected
608 A device was specified that does not exist
609 The device type was specified that does not exist
610 An invalid buffer was specified
611 A route was specified that is not available
612 A route was specified that is not allocated
613 An invalid compression was specified
614 There were insufficient buffers available
615 The specified port was not found
616 An asynchronous request is pending
617 The modem is already disconnecting
618 The specified port is not open
619 The specified port is not connected
620 No endpoints could be determined
621 The system could not open the phonebook
622 The system could not load the phonebook
623 The system could not find the phonebook entry for this connection
624 The system could not update the phonebook file
625 The system found invalid information in the phonebook
626 A string could not be loaded
627 A key could not be found
628 The connection was closed
629 The connection was closed by the remote computer
630 The modem was disconnected due to hardware failure
631 The user disconnected the modem
632 An incorrect structure size was detected
633 The modem is already in use or is not configured for dialing out
634 Your computer could not be registered on the remote network
635 There was an unknown error
636 The device attached to the port is not the one expected
637 A string was detected that could not be converted
638 The request has timed out
639 No asynchronous net is available
640 A error has occurred involving NetBIOS
641 The server cannot allocate NetBIOS resources needed to support the client
642 One of your computer's 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 There was an 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 for this account has expired
649 The account does not have permission to dial in
650 The remote access server is not responding
651 The modem has reported an error
652 There was an unrecognized response from the modem
653 A macro required by the modem 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 there was an attempt to set a macro not listed in the device .INF file section
663 The media .INI file refers to an unknown device type
664 The system has run out of memory
665 The modem is not properly configured
666 The modem is not functioning
667 The system was unable to read the media .INI file
668 The connection was terminated
669 The usage parameter in the media .INI file is invalid
670 The system was unable to read the section name from the media .INI file
671 The system was unable to read the device type from the media .INI file
672 The system was unable to read the device name from the media .INI file
673 The system was unable to read the usage from the media .INI file
674 The system was unable to read the maximum connection BPS rate from the media .INI file
675 The system was unable to read the maximum carrier connection speed from the media .INI file
676 The phone line is busy
677 A person answered instead of a modem
678 There was no answer
679 The system could not detect the carrier
680 There was no dial tone
681 The modem reported a general error
691 Access was denied because the user name and/or password was invalid on the domain
692 There was a hardware failure in the modem
695 The state machines are not started
696 The state machines are already started
697 The response looping did not complete
699 The modem response caused a buffer overflow
700 The expanded command in the device .INF file is too long
701 The modem moved to a connection speed 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 There was an error changing the password on the domain. The password might have been ...
710 Serial overrun errors were detected while communicating with the modem
711 The Remote Access Service Manager could not start. Additional information is provided in .....
712 The two-way port is initializing. Wait a few seconds and redial
713 No active ISDN lines are available
714 No ISDN channels are available to make the call
715 Too many errors occurred because of poor phone line quality
716 The remote access service IP configuration is unusable
717 No IP addresses are available in the static pool of remote access service IP addresses
718 The connection timed out waiting for a valid response from the remote computer
719 The connection was terminated by the remote computer
720 The connection attempt failed because your computer and the remote computer could not .....
721 The remote computer is not responding
722 Invalid data was received from the remote computer. This data was ignored
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 modem at a time
728 The system cannot find an IP adapter
729 SLIP cannot be used unless the IP protocol is installed
731 The protocol is not configured
732 Your computer and the remote computer could not agree on PPP control protocols
733 Your computer and the remote computer could not agree on PPP control protocols
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 authentication protocol required by the remote server cannot use the stored password. .....
740 An invalid dialing rule was detected
741 The local computer does not support the required data encryption type
742 The remote computer does not support the required data encryption type
743 The remote server requires data encryption
751 The callback number contains an invalid character. Only the following characters are .....
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 .....
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 .....
764 No smart card reader is installed
765 Internet connection sharing cannot be enabled. A LAN connection is already configured .....
766 The system could not find any certificate
767 Internet connection sharing cannot be enabled. The LAN connection selected on the .....
768 The connection attempt failed because of failure to encrypt data
769 The specified destination is not reachable
770 The remote machine 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 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 ....
783 Internet Connection Sharing cannot be enabled. The LAN connection selected as the private ....
784 You cannot dial using this connection at logon time, because it is configured to use a user name ....
785 You cannot dial using this connection at logon time, because it is not configured to use a smart card....
787 The L2TP connection attempt failed because the security layer could not authenticate the remote ....
788 The L2TP connection attempt failed because the security layer could not negotiate compatible ....
789 The L2TP connection attempt failed because the security layer encountered a processing error ...
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 - The modem could not be found.
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....
800 - Unable to establish the VPN connection. The VPN server may be un-reachable, or security ....
801 This connection is configured to validate the identity of the access server, but Windows cannot ....
900 The router is not running.
901 The interface is already connected.
902 The specified protocol identifier is not known to the router.
903 The Demand-dial Interface Manager is not running.
904 An interface with this name is already registered with the router.
905 An interface with this name is not registered with the router.
906 The interface is not connected.
907 The specified protocol is stopping.
908 The interface is connected and hence cannot be deleted.
909 The interface credentials have not been set.
910 This interface is already in the process of connecting.
911 An update of routing information on this interface is already in progress.
912 The interface configuration in invalid. There is already another interface that is connected to the ....
913 A Remote Access Client attempted to connect over a port that was reserved for Routers only.
914 A Demand Dial Router attempted to connect over a port that was reserved for Remote Access ....
915 The client interface with this name already exists and is currently connected.
916 The interface is in a disabled state.
917 The authentication protocol was rejected by the remote peer.
918 There are no authentication protocols available for use.
919 The remote computer refused to be authenticated using the configured authentication protocol....
920 The remote account does not have Remote Access permission.
921 The remote account has expired.
922 The remote account is disabled.
923 The remote account is not permitted to logon at this time of day.
924 Access was denied to the remote peer because username and/or password is invalid on the domain.
925 There are no routing enabled ports available for use by this demand dial interface.
926 The port has been disconnected due to inactivity.
927 The interface is not reachable at this time.
928 The Demand Dial service is in a paused state.
929 The interface has been disconnected by the administrator.
930 The authentication server did not respond to authentication requests in a timely fashion.
931 The maximum number of ports allowed for use in the multilinked connection has been reached.
932 The connection time limit for the user has been reached.
933 The maximum limit on the number of LAN interfaces supported has been reached.
934 The maximum limit on the number of Demand Dial interfaces supported has been reached.
935 The maximum limit on the number of Remote Access clients supported has been reached.
936 The port has been disconnected due to the BAP policy.
937 Because another connection of your type is in use, the incoming connection cannot accept your ....
938 No RADIUS servers were located on the network.
939 An invalid response was received from the RADIUS authentication server. Make sure that the ...
940 You do not have permission to connect at this time.
941 You do not have permission to connect using the current device type.
942 You do not have permission to connect using the selected authentication protocol.
943 BAP is required for this user.
944 The interface is not allowed to connect at this time.
945 The saved router configuration is incompatible with the current router.
946 RemoteAccess has detected older format user accounts that will not be migrated automatically....
948 The transport is already installed with the router.
949 Received invalid signature length in packet from RADIUS server.
950 Received invalid signature in packet from RADIUS server.
951 Did not receive signature along with EAPMessage from RADIUS server.
952 Received packet with invalid length or Id from RADIUS server.
953 Received packet with attribute with invalid length from RADIUS server.
954 Received invalid packet from RADIUS server.
955 Authenticator does not match in packet from RADIUS server.
1382 Maximum length exceeded.
1793 Account expired.
2250 Network connection does not exist.
#753 and higher are applicable only to Windows 2000 & higher