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RAS-DUN

List of DUN/RAS Error Codes and known counter-measures

Frequently-Seen Dial-Up Errors

602The port is already open.
 ~~Close all connections and try again.~~
619The port is disconnected.
624Cannot write the phone book file.
628The port was disconnected.
629The port was disconnected by the remote machine.
630The port was disconnected due to hardware failure.
633The port is already in use or is not configured for Remote Access dialout.
635"Unknown error" - Cannot establish the Dial-Up Networking session.
 ~~The client might be requesting protocol features (beyond "software compression") that the server does not support.~~
638The request has timed out.
645Internal authentication error.
 ~~The server might not support "encrypted password".~~
649The account does not have Remote Access permission.
650The Remote Access server is not responding.
676The line is busy.
 ~~Either the line is really busy, or the target phone number might be forbidden.~~
678There is no answer.
680There is no dial tone.
682ERROR WRITING SECTIONNAME
691Access denied because invalid username and/or password.
711RasMan initialization failure. Check the event log.
718PPP timeout.
720No PPP control protocols configured.
 ~~Win95/Win98: TCP/IP or Dialup Adapter might not be installed.~~
721Remote PPP peer is not responding.
732The PPP negotiation is not converging.
733The PPP control protocol for this network protocol is not available on the server.
734The PPP link control protocol terminated..
 ~~Try clearing the "Include Windows Logon Domain" option.~~
735The requested address was rejected by the server..
736The remote computer terminated the control protocol.
741The local computer does not support the required encryption level.
745An essential file is missing. Re-install Dial-Up Networking.
 ~~Will occur commonly in Win95 and Win98, but rarely in WinME and NT/2k/XP.~~

Other 6xx Dial-Up Errors

600An operation is pending.
601The port handle is invalid.
603Caller's buffer is too small.
604Wrong information specified.
605Cannot set port information.
606The port is not connected.
607The event is invalid.
608The device does not exist.
609The device type does not exist.
610The buffer is invalid.
611The route is not available.
612The route is not allocated.
613Invalid compression specified.
614Out of buffers.
615The port was not found.
616An asynchronous request is pending.
617The port or device is already disconnecting.
618The port is not open.
620There are no endpoints.
621Cannot open the phone book file.
622Cannot load the phone book file.
623Cannot find the phone book entry.
625Invalid information found in the phone book.
626Cannot load a string.
627Cannot find key.
631The port was disconnected by the user.
632The structure size is incorrect.
634Cannot register your computer on the remote network.
636The wrong device is attached to the port.
637The string could not be converted.
639No asynchronous net available.
640A NetBIOS error has occurred.
641The server cannot allocate NetBIOS resources needed to support the client.
642One of your NetBIOS names is already registered on the remote network.
643A network adapter at the server failed.
644You will not receive network message popups.
646The account is not permitted to log on at this time of day.
647The account is disabled.
648The password has expired.
651Your modem (or other connecting device) has reported an error.
652Unrecognized response from the device.
653A macro required by the device was not found in the device .INF file section.
654A command or response in the device .INF file section refers to an undefined macro
655The <message> macro was not found in the device .INF file section.
656The <defaultoff> macro in the device .INF file section contains an undefined macro
657The device .INF file could not be opened.
658The device name in the device .INF or media .INI file is too long.
659The media .INI file refers to an unknown device name.
660The device .INF file contains no responses for the command.
661The device .INF file is missing a command.
662Attempted to set a macro not listed in device .INF file section.
663The media .INI file refers to an unknown device type.
664Cannot allocate memory.
665The port is not configured for Remote Access.
666Your modem (or other connecting device) is not functioning.
667Cannot read the media .INI file.
668The connection dropped.
669The usage parameter in the media .INI file is invalid.
670Cannot read the section name from the media .INI file.
671Cannot read the device type from the media .INI file.
672Cannot read the device name from the media .INI file.
673Cannot read the usage from the media .INI file.
674Cannot read the maximum connection BPS rate from the media .INI file.
675Cannot read the maximum carrier BPS rate from the media .INI file.
677A person answered instead of a modem.
679Cannot detect carrier.
681General error reported by device.
683ERROR WRITING DEVICETYPE
684ERROR WRITING DEVICENAME
685ERROR WRITING MAXCONNECTBPS
686ERROR WRITING MAXCARRIERBPS
687ERROR WRITING USAGE
688ERROR WRITING DEFAULTOFF
689ERROR READING DEFAULTOFF
690ERROR EMPTY INI FILE
692Hardware failure in port or attached device.
 ~~Some Software Applications might cause this problem when a background download manager is active.~~
693ERROR NOT BINARY MACRO
694ERROR DCB NOT FOUND
695ERROR STATE MACHINES NOT STARTED
696ERROR STATE MACHINES ALREADY STARTED
697ERROR PARTIAL RESPONSE LOOPING
698A response keyname in the device .INF file is not in the expected format.
699The device response caused buffer overflow.

Other 7xx Dial-Up Errors

700The expanded command in the device .INF file is too long.
701The device moved to a BPS rate not supported by the COM driver.
702Device response received when none expected.
703ERROR INTERACTIVE MODE
704ERROR BAD CALLBACK NUMBER
705ERROR INVALID AUTH STATE
706ERROR WRITING INITBPS
707X.25 diagnostic indication.
708The account has expired.
709Error changing password on domain.
710Serial overrun errors were detected while communicating with your modem.
712Biplex port is initializing. Wait a few seconds and redial.
713No active ISDN lines are available.
714Not enough ISDN channels are available to make the call.
715Too many errors occurred because of poor phone line quality.
716The Remote Access IP configuration is unusable.
717No IP addresses are available in the static pool of Remote Access IP addresses.
719PPP terminated by remote machine.
722The PPP packet is invalid.
723The phone number, including prefix and suffix, is too long.
724The IPX protocol cannot dial-out on the port because the computer is an IPX router.
725The IPX protocol cannot dial-in on the port because the IPX router is not installed..
726The IPX protocol cannot be used for dial-out on more than one port at a time.
727Cannot access TCPCFG.DLL.
728Cannot find an IP adapter bound to Remote Access.
729SLIP cannot be used unless the IP protocol is installed.
730Computer registration is not complete.
731The protocol is not configured.
737Loopback detected..
738The server did not assign an address.
739The remote server cannot use the Windows NT encrypted password.
740The TAPI devices configured for Remote Access failed to initialize or were not installed correctly.
742The remote server does not support encryption.
743The remote server requires encryption.
744Cannot use the IPX net number assigned by the remote server. Check the event log.
751The callback number contains an invalid character. Only the following characters are allowed: 0 to 9, T, P, W, (,), -, @, and space.
752A syntax error was encountered while processing a script.
753The connection could not be disconnected because it was created by the multi-protocol router.
754The system could not find the multi-link bundle.
755The system cannot perform automated dial because this entry has a custom dialer. specified.
756This connection is already being dialed.
757Remote access services could not be started automatically. Additional information is provided in the event log.
758Internet connection sharing is already enabled on the connection.
760An error occurred while routing capabilities were being enabled.
761An error occurred while Internet connection sharing was being enabled for the connection.
763Internet connection sharing cannot be enabled. There are two or more LAN connections in addition to the connection to be shared.
764No smart card reader is installed.
765Internet connection sharing cannot be enabled. A LAN connection is already configured with the IP address required for automatic IP addressing.
766The system could not find any certificate.
767Internet 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.
768The connection attempt failed because of failure to encrypt data.
769The specific destination is not reachable.
770The remote machine rejected the connection attempt.
771The connection attempt failed because the network is busy.
772The remote computer's network hardware is incompatible with the type of call requested.
773The connection attempt failed because the destination number has changed.
774The connection attempt failed because of a temporary failure. Try connecting again.
775The call was blocked by the remote computer.
776The call could not be connected because the destination has invoked the Do Not Disturb feature.
777The connection attempt failed because the modem (or other connecting device) on the remote computer is out of order.
778It was not possible to verify the identity of the server.
779To dial out using this connection, you must use a smart card.
780An attempted function is not valid for this connection.
781Encryption failed because no valid certificate was found.
782Network Address Translation (NAT) is currently installed as a routing protocol, and must be removed before enabling Internet Connection Sharing.
783Cannot enable Internet Connection Sharing or IP address 192.168.0.1 is occupied.
784You cannot dial using this connection at logon time, because it is configured to use a user name different than the one on the smart card. If you want to use it at logon time, you must configure it to use the user name on the smart card.
785You cannot dial using this connection at logon time, because it is not configured to use a smart card. If you want to use it at logon time, you must edit the properties of this connection so that it uses a smart card.
786The L2TP connection attempt failed because there is no valid machine certificate on your computer for security authentication.
787The L2TP connection attempt failed because the security layer could not authenticate the remote computer.
788The L2TP connection attempt failed because the security layer could not negotiate compatible parameters with the remote computer.
789The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.
790The L2TP connection attempt failed because certificate validation on the remote computer failed.
791The L2TP connection attempt failed because security policy for the connection was not found.
792The L2TP Connection Attempt failed because security negotiation timed out.
793The L2TP connection attempt failed because an error occurred while negotiating security.
794The Framed Protocol RADIUS attribute for this user is not PPP.
795The Tunnel Type RADIUS attribute for this user is not correct.
796The Service Type RADIUS attribute for this user is neither Framed nor Callback Framed.
797The modem could not be found or modem driver needs to be updated.
798A certificate could not be found that can be used with this Extensible Authentication Protocol.
799Internet Connection Sharing (ICS) cannot be enabled due to an IP address conflict on the network. ICS requires the host be configured to use 192.168.0.1. Please ensure that no other client on the network is configured to use 192.168.0.1.

Other 8xx Dial-Up Errors

800Unable to establish the VPN Connection
 ~~The VPN server may be unreachable, or security parameters may not be configured properly.~~
801This connection is configured to validate the identity of the access server, but Windows cannot verify the digital certificate sent by the server.
802The card supplied was not recognized. Please check that the card is inserted correctly, and fits tightly.
 ~~(new in WinVista)~~
803The PEAP configuration stored in the session cookie does not match the current session configuration.
804The PEAP identity stored in the session cookie does not match the current identity.
805You cannot dial using this connection at logon time, because it is configured to use logged on user's credentials.
806Connection established but VPN connection cannot be completed
 ~~A device or router in the middle might not allow GRE packets (protocol number 47).~~
807The network connection between your computer and the VPN server was interrupted. This can be caused by a problem in the VPN transmission and is commonly the result of internet latency or simply that your VPN server has reached capacity. Please try to reconnect to the VPN server. If this problem persists, contact the VPN administrator and analyze quality of network connectivity.
808The network connection between your computer and the VPN server could not be established because the remote server refused the connection. This is typically caused by a mismatch between the server's configuration and your connection settings. Please contact the remote server's Administrator to verify the server configuration and your connection settings.
809The network connection between your computer and the VPN server could not be established because the remote server is not responding. This could be because one of the network devices (e.g., firewalls, NAT, routers, etc.) between your computer and the remote server is not configured to allow VPN connections. Please contact your Administrator or your service provider to determine which device may be causing the problem.
810A network connection between your computer and the VPN server was started, but the VPN connection was not completed. This is typically caused by the use of an incorrect or expired certificate for authentication between the client and the server. Please contact your Administrator to ensure that the certificate being used for authentication is valid.
811The network connection between your computer and the VPN server could not be established because the remote server is not responding. This is typically caused by a pre-shared key problem between the client and server. A pre-shared key is used to guarantee you are who you say you are in an IP Security (IPSec) communication cycle. Please get the assistance of your administrator to determine where the pre-shared key problem is originating.
812The connection was prevented because of a policy configured on your RAS/VPN server. Specifically, the authentication method used by the server to verify your username and password may not match the authentication method configured in your connection profile. Please contact the Administrator of the RAS server and notify them of this error.
813You have attempted to establish a second broadband connection while a previous broadband connection is already established using the same device or port. Please disconnect the earlier connection and then re-establish the connection.
814The underlying Ethernet connectivity required for the broadband connection was not found. Please install and enable the Ethernet adapter on your computer via the Network Connections folder before attempting this connection.
815Failed to connect.
815The broadband network connection could not be established on your computer because the remote server is not responding. This could be caused by an invalid value for the 'Service Name' field for this connection. Please contact your Internet Service Provider and inquire about the correct value for this field and update it in the Connection Properties.
816A feature or setting you have tried to enable is no longer supported by the remote access service.
817Cannot delete a connection while it is connected.
818The Network Access Protection (NAP) enforcement client could not create system resources for remote access connections. Some network services or resources might not be available. If the problem persists, disconnect and retry the remote access connection or contact the administrator for the remote access server.
819The Network Access Protection Agent (NAP Agent) service has been disabled or is not installed on this computer. Some network services or resources might not be available. If the problem persists, disconnect and retry the remote access connection or contact the administrator for the remote access server.
820The Network Access Protection (NAP) enforcement client failed to register with the Network Access Protection Agent (NAP Agent) service. Some network services or resources might not be available. If the problem persists, disconnect and retry the remote access connection or contact the administrator for the remote access server.
821The Network Access Protection (NAP) enforcement client was unable to process the request because the remote access connection does not exist. Retry the remote access connection. If the problem persists, make sure that you can connect to the Internet, and then contact the administrator for the remote access server.
822The Network Access Protection (NAP) enforcement client did not respond. Some network services or resources might not be available. If the problem persists, disconnect and retry the remote access connection or contact the administrator for the remote access server.
823Received Crypto-Binding TLV is invalid.
824Crypto-Binding TLV is not received.
825Point-to-Point Tunnelling Protocol (PPTP) is incompatible with IPv6. Change the type of virtual private network to Layer Two Tunnelling Protocol (L2TP)
826EAPTLS validation of the cached credentials failed. Please discard cached credentials.
827The L2TP/IPsec connection cannot be completed because the IKE and AuthIP IPSec Keying Modules service and/or the Base Filtering Engine service is not running. These services are required to establish an L2TP/IPSec connection. Please ensure that these services have been started before dialling the connection
 ~~(new in WinVista)~~

Other 9xx Dial-Up Errors

900The router is not running.
901The interface is already connected.
902The specified protocol identifier is not known to the router.
903The Demand-dial Interface Manager is not running.
904An interface with this name is already registered with the router.
905An interface with this name is not registered with the router.
906The interface is not connected.
907The specified protocol is stopping.
908The interface is connected and hence cannot be deleted.
909The interface credentials have not been set.
910This interface is already in the process of connecting.
911An update of routing information on this interface is already in progress.
912The interface configuration in invalid. There is already another interface that is connected to the same interface on the remote router.
913Remote Access Client attempted to connect over a port that was reserved for Routers only.
 ~~At the server side (if Windows) the "Allow VPN Connections" option might not be selected in RAS "Incoming Connections" properties.~~
914A Demand Dial Router attempted to connect over a port that was reserved for Remote Access Clients only.
915The client interface with this name already exists and is currently connected.
916The interface is in a disabled state.
917The authentication protocol was rejected by the remote peer.
918There are no authentication protocols available for use.
919The remote computer refused to be authenticated using the configured authentication protocol. The line has been disconnected.
920The remote account does not have Remote Access permission.
921The remote account has expired.
922The remote account is disabled.
923The remote account is not permitted to logon at this time of day.
924Access was denied to the remote peer because username and/or password is invalid on the domain.
925There are no routing enabled ports available for use by this demand dial interface.
926The port has been disconnected due to inactivity.
927The interface is not reachable at this time.
928The Demand Dial service is in a paused state.
929The interface has been disconnected by the administrator.
930Authentication Server did not respond in a timely fashion.
931The maximum number of ports allowed for use in the multilinked connection has been reached.
932The connection time limit for the user has been reached.
933The maximum limit on the number of LAN interfaces supported has been reached.
934The maximum limit on the number of Demand Dial interfaces supported has been reached.
935The maximum limit on the number of Remote Access clients supported has been reached.
936The port has been disconnected due to the BAP policy.
937Cannot accept VPN because another connection of your type is in use.
 ~~Win2k/WinXp Prof. limit to 1 connection.~~
938No RADIUS servers were located on the network.
939An invalid response was received from the RADIUS authentication server. Make sure that the case sensitive secret password for the RADIUS server is set correctly.
940You do not have permission to connect at this time.
941You do not have permission to connect using the current device type.
942You do not have permission to connect using the selected authentication protocol.
943BAP is required for this user.
944The interface is not allowed to connect at this time.
945The saved router configuration is incompatible with the current router.
946RemoteAccess has detected older format user accounts that will not be migrated automatically. To migrate these manually, run XXXX.
948The transport is already installed with the router.
949Received invalid signature length in packet from RADIUS server.
950Received invalid signature in packet from RADIUS server.
951Did not receive signature along with EAPMessage from RADIUS server.
952Received packet with invalid length or Id from RADIUS server.
953Received packet with attribute with invalid length from RADIUS server.
954Received invalid packet from RADIUS server.
955Authenticator does not match in packet from RADIUS server.

A list in german language can be found at: Admin-Tipps Glossary

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