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The following list contains the error codes that you may receive when you try to access a dial-up or VPN connection in Windows Vista:
600
An operation is pending.
601
Not valid indicator port.
602
The port is already open.
603
The caller's buffer is too small.
604
The information is specified incorrectly.
606
The port is not connected.
608
The device does not exist.
609
The device type does not exist.
610
The buffer is invalid.
612
The route is not allocated.
615
No port 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.
621
Can not open the phone book file.
622
Can not load the phone book file.
623
Can not find the entry in the phone book.
624
Can not write to file phonebook.
625
Not valid information found in the phone book.
627
Can not find the key.
628
The port was disconnected.
629
The remote computer disconnected the port.
630
The port was disconnected due to hardware failure.
631
The user disconnected the port.
632
The size of the structure is not correct.
633
The port is already in use or is not configured for Remote Access dialout.
Note
In this error message in English, the word "dialout" is a misspelling and actually means "dial out".
635
Unknown error.
636
It is the port connected the wrong device.
638
The request has timed out.
645
Internal authentication error.
646
You can not log into the account at this time of day.
647
The account is disabled.
648
The password has expired.
649
The account does not have remote access permission.
651
The modem or other connecting device has reported an error.
652
Answer unrecognized device.
653
Not find a macro required by the device section device .INF file.
654
A command or response in Section device .INF file refers to an undefined macro.
655
The <message> macro was not found in the section of the device .INF file.
656
The <defaultoff> macro section of the device .INF file contains an undefined macro.
657
Can not open the device .INF file.
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
Missing command in the device .INF file.
662
He tried to set a macro not listed in the section of the device .INF file.
663
The media .INI file refers to an unknown device type.
664
Unable to allocate memory.
665
The port is not configured for remote access.
666
The modem (or other connecting device) is not functioning.
667
Can not read the media .INI file.
668
The connection dropped.
669
The usage parameter in the media .INI file is invalid.
670
Can not read the section name in the media .INI file.
671
Can not read the device type from the media .INI file.
672
Can not read the device name from the media .INI file.
673
Can not read the usage from the media .INI file.
676
The line is busy.
677
He said a person instead of a modem.
678
No response.
679
Can not detect carrier.
680
No dial tone.
691
Access was denied because the username or password, or both, are not valid in the domain.
692
Hardware failure in port or attached device.
693
ERROR: THE MACRO IS NOT BINARY
694
ERROR DCB NOT FOUND
695
ERROR STATE MACHINES NOT START
696
ERROR STATE MACHINES ALREADY STARTED
697
LOOP ERROR PARTIAL RESPONSE
698
An answer key name in the device .INF file is not the expected format.
699
The device response caused a buffer overflow.
700
The expanded by the command device .INF file is too long.
701
The device moved to a BPS rate not the COM driver.
702
Device response was received when none expected.
703
ERROR INTERACTIVE MODE
704
ERROR CALLBACK NUMBER WRONG
705
ERROR INVALID AUTH STATE
707
X.25 diagnostic indication.
708
The account has expired.
709
Error changing password on domain.
710
Number of overrun errors when communicating with the modem was detected.
711
RasMan initialization error. Check the event log.
713
No ISDN lines (ISDN) active available.
716
The Remote Access IP configuration is unusable.
717
There are no IP addresses in the static pool of Remote Access IP addresses.
718
Sold PPP timeout.
720
No photo configured PPP control protocols.
721
Remote PPP peer is not responding.
722
The PPP packet is invalid.
723
The phone number, including prefix and suffix, is too long.
726
The IPX protocol can not be used to make a call on more than one port at a time.
728
Can not find an IP adapter bound to Remote Access.
729
Error using SLIP unless the IP protocol is installed.
730
It has not been finished registering the team.
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 protocol PPP link control over.
735
The requested address was rejected by the server.
736
The remote computer terminated the control protocol.
737
Loopback is detected.
738
The server did not assign an address.
739
The remote server can not use the Windows NT encrypted password.
740
The TAPI devices configured for remote access not initialized or not installed correctly.
741
The local computer does not support encryption.
742
The remote server does not support encryption.
749
ERROR_BAD_PHONE_NUMBER
752
A syntax error while processing a script was found.
753
Failed to disconnect the connection that was created by the multi-protocol router.
754
The system can not find the multilink bundle.
755
The system can not perform automated dial because this connection has a custom dialer.
756
Already marked this connection.
757
Can not automatically start the Remote Access Services. Additional information is provided in the event log.
764
No smart card reader installed.
765
You can not enable Internet Connection Sharing. A LAN connection is already configured with the IP address required for automatic IP addressing.
766
Can not find a certificate. Connections that use the L2TP protocol over IPSec require the installation of a machine certificate, also known as a computer certificate.
767
You can not enable Internet Connection Sharing. The selected as the private network LAN connection has more than one IP address. Reconfigure using an IP address before enabling Internet Connection Sharing.
768
Error in the connection attempt by a failure to encrypt data.
769
You can not reach the specified destination.
770
The remote computer rejected the connection attempt.
771
Connection attempt failed because the network is busy.
772
The network hardware remote computer is incompatible with the type of call requested.
773
Connection attempt failed because you changed the destination number.
774
Connection attempt failed by a temporary error. Try connecting again.
775
The remote computer blocked the call.
776
The call can not be connected because the remote computer has invoked the Do Not Disturb feature.
777
Connection attempt failed because the modem (or other connecting device) on the remote computer does not work.
778
Unable to verify the server's identity.
780
An attempted function is not valid for this connection.
782
Can not enable Internet Connection Sharing (ICS) Firewall or Internet connection that is enabled Routing and Remote Access. To enable ICS or ICF, first disable Routing and Remote Access. For more information about Routing and Remote Access, ICS, or ICF, see Help and Support.
783
You can not enable Internet Connection Sharing. The LAN selected as private network connection is not present or is disconnected from the network. Check that the LAN adapter is connected before enabling Internet Connection Sharing.
784
You can not dial using this connection at logon, as it is configured to use a different name for the smart card user. To use it, set it to the username of the smart card.
785
You can not dial using this connection at logon, because it is not configured to use a smart card. To use it, modify the properties of this connection so that it uses a smart card.
786
Error in the L2TP connection attempt failed because no valid machine certificate on your computer for security authentication.
787
Error in the L2TP connection attempt failed because the security layer could not authenticate the remote computer.
788
Error in the L2TP connection attempt failed because the security layer could not negotiate compatible parameters with the remote computer.
789
Error in the L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.
790
Error in the L2TP connection attempt failed because there was an error in certificate validation on the remote computer.
791
Error in the L2TP connection attempt failed because it did not match the security policy for the connection.
792
Error in the L2TP connection attempt failed because the timeout security negotiation timed out.
793
Error in the L2TP connection attempt failed because an error occurred while negotiating security.
794
The RADIUS attribute of network protocol for this user is not PPP.
795
The RADIUS Tunnel Type attribute for this user is not correct.
796
The RADIUS attribute type of service for this user is neither Framed nor Callback network.
797
You can not establish a connection to the remote computer because a modem was not found or was busy modem. For details, click More Info or search number below error in Help and Support.
798
Can not find a certificate that can be used with this Extensible Authentication Protocol.
799
You can not enable Internet Connection Sharing (ICS) due to a conflict of IP addresses on the network. ICS requires the host be configured to use 192.168.0.1. Make sure that no other network client is configured to use 192.168.0.1.
800
Unable to establish the VPN connection. You may not VPN server can reach or security settings may not be correct for this connection.
801
This connection is configured to validate the identity of the access server, but Windows can not verify the digital certificate sent by the server.
802
The card you have provided is not recognized. Make sure the card is inserted correctly and that fits the intended space.
803
The PEAP configuration stored in the session cookie does not match the current session configuration.
804
The PEAP identity stored in the session cookie does not match the current identity.
805
You can not dial using this connection at logon time, because it is configured to use user credentials connected.
806
Has started a connection between the computer and the VPN server, but can not complete the VPN connection. The most common cause is not configured with at least one Internet device (for example, a firewall or a router) between your computer and the VPN server to support packet protocol Generic Routing Encapsulation (GRE). If the problem persists, contact the network administrator or your ISP.
807
The network connection between your computer and the VPN server was interrupted. It may be due to a problem in the VPN transmission and is usually caused by Internet latency or simply that your VPN server has reached capacity. Try to connect to the VPN server. If this problem persists, contact the VPN administrator and analyze the quality of the network connection.
808
Failed to establish the network connection between your computer and the VPN server because the remote server refused the connection. The most common cause is the discrepancy between the server configuration and connection settings. Contact the administrator of the remote server to verify the server configuration and connection.
809
Failed to establish the network connection between your computer and the VPN server because the remote server is not responding. This could be because one of the network devices (eg, firewalls, NAT, routers, etc.) between the computer and the remote server is not configured to allow VPN connections. Contact your administrator or service provider to determine which device may be causing the problem.
810
A network connection between your computer and the VPN server was started, but the VPN connection was not completed. The most likely cause is the use of an incorrect or expired for authentication between the client and the server certificate. Contact your administrator to ensure that the certificate being used for authentication is valid.
811
Failed to establish the network connection between your computer and the VPN server because the remote server is not responding. The most likely cause is a problem in pre-shared key between the client and the server. A pre-shared key is used to ensure their identity in a communication cycle IP Security (IPSec). Seek help the administrator to determine the source of the problem of pre-shared key.
812
The connection due to a configured on the RAS / VPN server policy is prevented. Specifically, can the authentication method used by the server to verify your username and password does not match the configured in the connection profile. Contact RAS server administrator and inform them of this error.
813
You tried to establish a broadband connection when a previous broadband connection with the same device or port is already in place. Disconnect the previous connection and re-establish the connection.
814
No underlying Ethernet connectivity required for the broadband connection was found. Before attempting this connection, install and enable the Ethernet adapter on your computer via the Network Connections folder.
815
Could not connect to broadband network on the computer because the remote server is not responding. This may be due to an invalid value in the 'Service Name' field for this connection. Contact your ISP and ask for the correct value for this field and update it in the Connection Properties.
816
The Remote Access Service no longer supports a feature or setting you have tried to authorize.
817
Can not delete a connection while it is connected.
818
The enforcement client Network Access Protection (NAP) could not create system resources for remote access connections. Some resources or network services are not available. If the problem persists, disconnect and retry the remote connection or contact the administrator of the remote access server access.
819
The Agent Service Network Access Protection (NAP Agent) has been disabled or is not installed on this computer. Some resources or network services are not available. If the problem persists, disconnect and retry the remote connection or contact the administrator of the remote access server access.
820
Error enforcement client Network Access Protection (NAP) to register the service agent Network Access Protection (NAP Agent). Some resources or network services are not available. If the problem persists, disconnect and retry the remote connection or contact the administrator of the remote access server access.
821
The enforcement client Network Access Protection (NAP) 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 you can connect to the Internet and contact the administrator of the remote access server.
822
The enforcement client Network Access Protection (NAP) did not respond. Some resources or network services are not available. If the problem persists, disconnect and retry the remote connection or contact the administrator of the remote access server access.
823
The Crypto-Binding TLV is invalid.
824
Crypto-Binding TLV is not received.
825
The point to point protocol tunneling (PPTP) is incompatible with IPv6. Change the type of virtual private network Protocol Layer Two Tunneling (L2TP)
Note
In this error message 8255 in English, the word "Tunnelling" is a misspelling and actually means "Tunneling".
826
Error EAPTLS validation of credentials in the cache. Discard cached credentials.
827
The L2TP / IPsec connection can not be completed because the service modules keying IPSec IKE and AuthIP or Motor Base Filtering service is not running. These services are required to establish an L2TP / IPSec connection. Make sure these services started before dialing the connection.
Note
In this error message 827 in English, the word "dialing" is a misspelling and actually means "dialing".