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.
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 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 (or other connecting device) is already disconnecting.
618 The specified port is not open.
620 No endpoints could be determined.
621 The system could not open the phone book file.
622 The system could not load the phone book file.
623 The system could not find the phone book entry for this connection.
624 The system could not update the phone book file.
625 The system found invalid information in the phone book file.
626 A string could not be loaded.
628 The connection was terminated by the remote computer before it could be completed.
629 The connection was closed by the remote computer.
630 The modem (or other connecting device) was disconnected due to hardware failure.
631 The user disconnected the modem (or other connecting device).
632 An incorrect structure size was detected.
633 The modem (or other connecting device) is already in use or is not configured properly.
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.
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 (or other connecting device) has reported an error.
652 There was an unrecognized response from the modem (or other connecting device).
653 A macro required by the modem (or other connecting device) was not found in the device .INF file.
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 (or other connecting device) is not properly configured.
666 The modem (or other connecting device) 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.
677 A person answered instead of a modem (or other connecting device).
678 The remote computer did not respond.
679 The system could not detect the carrier.
681 The modem (or other connecting device) 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 (or other connecting device).
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.
710 Serial overrun errors were detected while communicating with the modem.
711 A configuration error on this computer is preventing this connection.
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 was terminated because the remote computer did not respond in a timely manner.
719 The connection was terminated by the remote computer.
721 The remote computer did not respond.
722 Invalid data was received from the remote computer. This data was ignored.
723 The phone number, including prefix and suffix, is too long.
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.
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.
738 The server did not assign an address.
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.
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.
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.
764 No smart card reader is installed.
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.
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.
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.
798 A certificate could not be found that can be used with this Extensible Authentication Protocol.