• 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 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 too short or might have matched a previously used password.
• 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 the event log.
• 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 agree on PPP control protocols.
• 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. Redial, entering the password explicitly.
• 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 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

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