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Windows Dial-up Networking Error Codes
This document applies to Windows.
This document lists dial-up networking (DUN) and Remote Access Service (RAS) error codes, and provides a brief description of each code.
NOTE:
This document does not provide solutions for these error codes. Restarting your computer, and removing and reinstalling the modem from Device Manager might fix most of these errors.
Figure : Example of Error
Image of the Error 680 message.
Figure : Example of Error
Image of the Error 633 message.
Networking error codes
Error codes
Description
14
The connection was deleted or reconnected.
600
An operation is pending. The modem's setting might have changed without restarting Windows.
601
The port handle is invalid. A modem's setting might have changed without restarting Windows.
602
The port is already open. Another program is using the modem.
603
The buffer settings (space allowed in your computer for accessing the modem) are too small. A modem's setting might have changed without restarting Windows.
604
Wrong information specified. The modem's serial port might have changed.
605
Cannot set port information. The modem's serial port might have changed.
606
The port is not connected. A modem's setting might have changed without restarting Windows.
607
The event is invalid. A modem's setting might have changed without restarting Windows.
608
The device does not exist. The modem's serial port might have changed.
609
The device type does not exist.
610
The buffer is invalid. A modem's setting might have changed without restarting Windows.
611
The route is not available. NetBIOS might not be configured or installed (NT network).
612
The route is not allocated. NetBIOS might not be configured or installed (NT network).
613
Invalid compression specified. A modem's setting might have changed without restarting Windows.
614
Not enough space was allowed for your computer to access the modem. A modem's setting might have changed without restarting Windows.
615
The port was not found. The modem's serial port might have changed.
616
An asynchronous request is pending. A modem's setting might have changed without restarting Windows.
617
Disconnecting.
Error codes
Description
618
The port is not open. A modem's setting might have changed without restarting Windows.
619
The port is disconnected. The modem's serial port might have changed.
620
There are no endpoints. The modem's serial port might have changed.
621
Cannot open the phone book file. The file rasphone.pbk might be missing or corrupt (NT, XP only).
622
Cannot load the phone book file. The file rasphone.pbk might be missing or corrupt (NT, XP only).
623
Cannot find the phone book entry. The file rasphone.pbk might be missing or corrupt (NT, XP only).
624
Cannot write the phone book file. The file rasphone.pbk might be missing or corrupt (NT, XP only).
625
Invalid information found in the phone book. The file rasphone.pbk might be missing or corrupt (NT, XP only).
626
Cannot load a string. A modem's setting might have changed without restarting Windows.
Error code
Description
627
Cannot find key.
628
The port was disconnected.
629
The port was disconnected by the remote computer. The most common reason for this error is a wrong password.
630
The port was disconnected due to hardware failure.
631
The port was disconnected by the user.
632
The structure size is incorrect. A modem's setting might have changed without restarting Windows.
633
The port is already in use or is not configured for Remote Access.
NOTE:
This error is one of the more common errors that can usually be resolved by removing the dial-up modem name from Device Manager, restarting the PC, and then waiting for Windows Plug and Play process to find and reinstall the modem.
634
Cannot register your computer on the remote network. Another computer might already be logged on using the same logon.
635
Unknown error.
Error codes
Description
636
The wrong device is attached to the port. This means your modem might be set up incorrectly.
637
The string could not be converted. A modem's setting might have changed without restarting Windows.
638
The request has timed out. A modem's setting might have changed without restarting Windows.
639
No asynchronous net available.
640
A NetBIOS error has occurred. Connection speed might be too fast for line quality.
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. Another computer might already be logged on using the same logon.
643
A network adapter at the server failed.
644
You will not receive network message popups.
645
Internal authentication error. Require encrypted password might be set in Server Types. Hand-held device linking software might be active.
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. Modem might have been installed with a wrong .inf file.
652
Unrecognized response from the device. Modem might have been installed with a wrong .inf file.
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.
Error codes
Description
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. Shut down some programs or applications and try again.
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. Try dialing in again.
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.
Error codes
Description
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. Try dialing again.
677
A person answered, rather than a modem. Check to be sure that your number leads to an ISP, not a telephone number.
678
There is no answer.
679
Cannot detect carrier. This could be a problem with your ISP.
680
There is no dial tone. Check your phone for unheard messages.
681
General error reported by device. Check to make sure your modem is working.
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 are invalid on the domain. Check to make sure you entered your username and/or password correctly.
692
Hardware failure in port or attached device.
693
ERROR NOT BINARY MACRO.
Error codes
Description
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.
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.
Error codes
Description
714
Not enough ISDN channels are available to make the call.
715
Too many errors occurred because of poor phone line quality. This means your phone line might have static.
716
The Remote Access IP configuration is not usable.
717
No IP addresses are available in the static pool of Remote Access IP addresses.
718
PPP timeout.
719
PPP terminated by remote computer.
720
No PPP control protocols configured.
721
Remote PPP peer is not responding.
722
The PPP packet is invalid.
723
The phone number, including pre and suf, 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.
Error codes
Description
734
The PPP link control protocol terminated.
735
The server rejected the requested address.
736
The remote computer terminated the control protocol.
737
Loopback detected.
738
The server did not assign an address, therefore, the modem cannot dial in.
Error codes
Description
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.
745
A file needed to dial-up is missing.
752
A syntax error was encountered while processing a script.
753
Connection could not be disconnected, created by multiple protocol router.
754
Could not find multilink bundle.
755
Cannot dial due to custom dialer.
756
Connection is already being dialed (probably be another process).
757
Remote Access cannot automatically start. See event log.
758
ICS is already enabled.
760
Enabling routing capabilities failed.
Error codes
Description
761
Enabling of ICS failed.
763
ICS failed due to more than one LAN connection to share at the same time.
764
No smart card reader installed.
765
ICS cannot be enabled. LAN address already exists (automatic addressing).
766
No certificate.
767
ICS cannot be enabled. More than one of the same IP Addresses exist on the same private LAN. Reconfigure the LAN so that only unique IPs are used.
768
Encryption process failed.
769
Destination not reachable.
770
Remote computer rejected this connection attempt.
771
Network busy.
772
Remote hardware is incapable of handling connection request.
773
Destination number changed.
774
Temporary failure.
775
Call blocked by remote computer.
776
Remote hardware is using do-not-disturb feature.
777
Remote modem out of service.
778
Unable to verify the server's identity.
779
Connection requires a smart card. Enable smart card.
780
Attempted function not valid on this type of connection.
781
No valid certificate found for encryption.
Error codes
Description
782
Network Address Translation (NAT) installed as the routing protocol. Remove before attempting to enable ICS.
783
ICS cannot be enabled. LAN selected as private network disconnected or not present.
784
User name is different than that required by the smart card.
785
Connection not configured for smart card. Enable this from connection's properties.
786
L2TP connection failed. No valid computer certificate.
787
L2TP connection failed. Security could not authenticate remote computer.
788
L2TP connection failed. Security and remote computer unable to establish parameters.
789
L2TP connection failed. Security encountered processing error with remote computer.
790
L2TP connection failed. Certificate validation failed at the remote computer.
791
L2TP connection failed. Security policy not found.
792
L2TP connection failed. Security negotiation timed out.
793
L2TP connection failed. Error during Security negotiation.
794
Framed Protocol RADIUS is not PPP.
795
Tunnel Type RADIUS not correct.
796
Service Type RADIUS is neither Framed nor Callback Framed.
797
Modem not found or busy.
798
Certificate that uses Extensible Authentication Protocol not found.
799
ICS cannot be enabled. IP address conflict. Ensure that only the host computer uses IP 192.168.0.1
800
VPN server unavailable, unreachable, or is not configured for this connection.
995
Operation aborted.
Error codes
Description
1382
Max length exceeded.
1793
Account expired.
2250
Network connection does not exist.