Remote Access Service (RAS) Error Code List

This is a listing of Microsoft Remote Access Service (also called Dial-Up Networking) error codes to assist you in trouble-shooting your dial-up connection. These codes cover Windows 95/98 and Windows NT 4.0.

600 - An operation is pending.
601 - The port handle is invalid.
602 - The port is already open.
603 - Caller's buffer is too small.
604 - Wrong information specified.
605 - Cannot set port information.
606 - The port is not connected.
607 - The event is invalid.
608 - The device 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 - The port is disconnected.
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 port was disconnected.
629 - The port was disconnected 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 connecting 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 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 connecting 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 .INIfile.
676 - The line is busy.
677 - A person answered instead of a modem.
678 - There is no answer.
679 - Cannot detect carrier.
680 - There is no dial tone.
681 - General error reported by device.
682 - ERROR WRITING SECTIONNAME
683 - ERROR WRITING DEVICETYPE
684 - ERROR WRITING DEVICENAME
685 - ERROR WRITING MAXCONNECTBPS
686 - ERROR WRITING MAXCARRIERBPS
687 - ERROR WRITING USAGE
688 - ERROR WRITING DEFAULTOFF
689 - ERROR READING DEFAULTOFF
690 - ERROR EMPTY INI FILE
691 - Access denied because username and/or password is invalid on the domain.
692 - Hardware failure in port or attached device.
693 - ERROR NOT BINARY MACRO
694 - ERROR DCB NOT FOUND
695 - ERROR STATE MACHINES NOT STARTED
696 - ERROR STATE MACHINES ALREADY STARTED
697 - ERROR PARTIAL RESPONSE LOOPING
698 - A response keyname in the device .INF file is not in the expected format.
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.
702 - Device response received when none expected.
703 - ERROR INTERACTIVE MODE
704 - ERROR BAD CALLBACK NUMBER
705 - ERROR INVALID AUTH STATE
706 - ERROR WRITING INITBPS
707 - X.25 diagnostic indication.
708 - The account has expired.
709 - Error changing password on domain.
710 - Serial overrun errors were detected while communicating with your modem.
711 - RasMan initialization failure. Check the event log.
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 - PPP timeout.
719 - PPP terminated by remote machine.
720 - No PPP control protocols configured.
721 - Remote PPP peer is not responding.
722 - The PPP packet is invalid.
723 - The phone number, including prefix and suffix, is too long.
724 - The IPX protocol cannot dial-out on the port because the computer is an IPX router.
725 - The IPX protocol cannot dial-in on the port because the IPX router is not installed.
726 - The IPX protocol cannot be used for dial-out on more than one port at a time.
727 - Cannot access TCPCFG.DLL.
728 - Cannot find an IP adapter bound to Remote Access.
729 - SLIP cannot be used unless the IP protocol is installed.
730 - Computer registration is not complete.
731 - The protocol is not configured.
732 - The PPP negotiation is not converging.
733 - The PPP control protocol for this network protocol is not available on the server.
734 - The PPP link control protocol 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 Windows NT 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.
744 - Cannot use the IPX net number assigned by the remote server. Check the event log.
751 - The callback number contains an invalid character. Only the following characters are allowed: 0 to 9, T, P, W, (,), -, @, and space.
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 - The system could not find any certificate.
767 - Internet connection sharing 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 Internet connection sharing.
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.
797 - The modem could not be found.