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Dialup errors

If there's a problem with your dialup connection, you may see a numbered dialup error. This article will provide basic troubleshooting for all dialup errors for Windows, plus there may be some more specific troubleshooting steps in the list of errors (if available).

If you don't find what you're looking for, please see please try searching for your specific dialup error on Google, or try ModemHelp.net.
 

Basic dialup error troubleshooting

No matter which error you encounter, the following steps may prove useful:

  1. Check for outages in your area.
     
  2. Make sure your landline isn't engaged with a fax or phone call.
     
  3. Restart your computer.
     
  4. Check your computer for any viruses or other malware. If you're not sure how to do this, please contact support for your antivirus software provider.
     
  5. Check the manufacturer's tech specs for your dialup modem to confirm it's compatible with your operating system. This may be useful if you have an old dialup modem but a very new operating system - your modem may not have been tested for compatibility with the latest software if that software didn't exist when the modem was manufactured. Most manufacturers will test compatibility as new software releases, unless the product is End of Life or the manufacturer has ceased operations.
     
  6. Reinstall your dialup modem.
     
  7. Perform a winsock reset.
     
  8. More specific troubleshooting may be listed under your error in the list below.
     

Dialup errors

Finding something in this list

  1. While looking at this web page, hold down the CTRL key (PC) or Command key (Mac) on your keyboard and then tap the F key.
     
  2. A Find bar will open, typically at the bottom of the window (e.g. Firefox) or below the address bar (e.g. Internet Explorer).
     
  3. Type the number of the dialup error you are looking for into the Find bar and then hit the Enter key on your keyboard.
     
  4. The Find bar will search the text on the page. If it finds a match, it will scroll to the word’s location and highlight it.


     

Dialup Errors

  • Dialup error 2: The system cannot find the file specified.
     
  • Dialup error 5: Access denied/Invalid procedure call.
     
  • Dialup error 6: Stack overflow.
     
  • Dialup error 20: The system cannot find the device specified.
     
  • Dialup error 71: No more connections allowed.
     
  • Dialup error 380: Invalid property value.
     
  • Dialup error 600: An operation is pending.

    Try this:
    - Hold down the CTRL, ALT + DELETE keys on your keyboard and open the Task Manager. If you see "RNAAPP" running, select it and then click End task.
     

  • Dialup error 601: The port handle is invalid.

    Try this:
    - Hold down the CTRL, ALT + DELETE keys on your keyboard and open the Task Manager. If you see "RNAAPP" running, select it and then click End task.
    - If you still get the dialup error, your dialup modem may be faulty. Please try another.
     

  • Dialup error 602: The port is already open.

    Try this:
    - Hold down the CTRL, ALT + DELETE keys on your keyboard and open the Task Manager. If you see "RNAAPP" running, select it and then click End task.
     

  • Dialup error 603: Caller's buffer is too small.

    Try this:
    - Open the Start Menu and then open the Control Panel. Select Devices and Printers.
    - Right click on your modem and select Properties.
    - In the popup window, select the Modem tab and then make sure the Maximum Port Speed is set to the highest option. Click OK.
     

  • Dialup error 604: Wrong information specified.
     
  • Dialup error 605: Cannot set port information.
     
  • Dialup error 606: The port is not connected.
     
  • Dialup error 607: The event is invalid.
     
  • Dialup error 608: The device does not exist.
     
  • Dialup error 609: The device type does not exist.
     
  • Dialup error 610: The buffer is invalid.

    Try this:
    - Open the Start Menu and then open the Control Panel. Select Devices and Printers.
    - Right click on your modem and select Properties.
    - In the popup window, select the Modem tab and then make sure the Maximum Port Speed is set to the highest option. Click OK.
     

  • Dialup error 611: The router is not available.
     
  • Dialup error 612: The router is not allocated.
     
  • Dialup error 613: Invalid compression specified.

    Try this:
    - Add "&K3" to your modem string. If this doesn't work, try "&K0" instead of &K3.
     

  • Dialup error 614: Out of buffers.
     
  • Dialup error 615: The port was not found.
     
  • Dialup error 616: An asynchronous request is pending.
     
  • Dialup error 617: The port or device is already disconnecting.
     
  • Dialup error 618: The port is not open.

    Try this:
    - Hold down the CTRL, ALT + DELETE keys on your keyboard and open the Task Manager. If you see "RNAAPP" running, select it and then click End task.
     

  • Dialup error 619: The port is disconnected.
     
  • Dialup error 620: There are no endpoints.
     
  • Dialup error 621: Cannot open the phone book file.
     
  • Dialup error 622: Cannot load the phone book file.
     
  • Dialup error 623: Cannot find the phone book entry.
     
  • Dialup error 624: Cannot write to phone book file.

    Try this:
    - The file RASPHONE.EXE may be missing.
    - There should be a file named RASPHONE.PBK in c:/windows/system32/RAS/. Rename RASPHONE.PBK to RASPHONE.EXE and then run it.
     

  • Dialup error 625: Invalid information found in the phone book.

    Try this:
    - The file RASPHONE.EXE may be missing.
    - There should be a file named RASPHONE.PBK in c:/windows/system32/RAS/. Rename RASPHONE.PBK to RASPHONE.EXE and then run it.
     

  • Dialup error 626: Cannot load a string.
     
  • Dialup error 627: Cannot find key.
     
  • Dialup error 628: The port was disconnected.
     
  • Dialup error 629: The port was disconnected by the remote machine.

    Try this:
    - Add "S10=50" to your modem string.
     

  • Dialup error 630: The port was disconnected due to hardware failure.

    Try this:
    - If you still encounter this error after completing the basic troubleshooting, your dialup modem may be faulty. Please try another.
     

  • Dialup error 631: The port was disconnected by the user.
     
  • Dialup error 632: The structure size is incorrect.
     
  • Dialup error 633: The port is already in use or is not configured for remote access dial-out.

    Try this:
    - Open your Start Menu and select Search. Search for "telephon.ini".
    - If you find this file, rename it to "telephon.old".
    - Go back to the Start Menu and open Run (you may need to search for "run"). Type "tapiini.exe" into the Run text box and then click OK.
    - Restart your computer.
     

  • Dialup error 634: Cannot register your computer on the remote network.
     
  • Dialup error 635: Unknown error.
     
  • Dialup error 636: The wrong device is attached to the port.
     
  • Dialup error 637: The string could not be converted.
     
  • Dialup error 638: The request has timed out.
     
  • Dialup error 639: No asynchronous net available.
     
  • Dialup error 640: A NetBIOS error has occurred.
     
  • Dialup error 641: The server cannot allocate NetBIOS resources needed to support the client.
     
  • Dialup error 642: One of your NetBIOS names is already registered on the remote network.
     
  • Dialup error 643: A network adapter at the server failed.
     
  • Dialup error 644: You will not receive network message popups.
     
  • Dialup error 645: Internal authentication error.

    Try this:
    - Try resetting your TCP/IP settings to default.
     

  • Dialup error 646: The account is not permitted to log on at this time of day.
     
  • Dialup error 647: The account is disabled.
     
  • Dialup error 648: The password has expired.
     
  • Dialup error 649: The account does not have remote access permission.
     
  • Dialup error 650: The remote access server is not responding.

    Try this:
    - Open your Start Menu and select Search. Search for "telephon.ini".
    - If you find this file, rename it to "telephon.old".
    - Go back to the Start Menu and open Run (you may need to search for "run"). Type "tapiini.exe" into the Run text box and then click OK.
    - Restart your computer.
     

  • Dialup error 651: Your modem (or other connecting device) hasreported an error.
     
  • Dialup error 652: Unrecognised response from the device.
     
  • Dialup error 653: A macro required by the device was not found in the device .INF file section.
     
  • Dialup error 654: A command or response in the device .INF file section refers to an undefined macro.
     
  • Dialup error 655: The <message> macro was not found in the device .INF file section.
     
  • Dialup error 656: The <defaultoff> macro in the device .INF file section contains an undefined macro.
     
  • Dialup error 657: The device .INF file could not be opened.
     
  • Dialup error 658: The device name in the device .INF or media .INI file is too long.
     
  • Dialup error 659: The media .INI file refers to an unknown device name.
     
  • Dialup error 660: The device .INF file contains no responses for the command.
     
  • Dialup error 661: The device .INF file is missing a command.
     
  • Dialup error 662: Attempted to set a macro not listed in device .INF file section.
     
  • Dialup error 663: The media .INI file refers to an unknown device type.
     
  • Dialup error 664: Cannot allocate memory.
     
  • Dialup error 665: The port is not configured for remote access.
     
  • Dialup error 666: Your modem (or other connecting device) is not functioning.

    Try this:
    - If you still experience this error after performing the basic troubleshooting, your dialup modem may be faulty. Please try another.
     

  • Dialup error 667: Cannot read the media .INI file.
     
  • Dialup error 668: The connection dropped.
     
  • Dialup error 669: The usage parameter in the media .INI file is invalid.
     
  • Dialup error 670: Cannot read the section name from the media .INI file.
     
  • Dialup error 671: Cannot read the device type from the media .INI file.
     
  • Dialup error 672: Cannot read the device name from the media .INI file.
     
  • Dialup error 673: Cannot read the usage from the media .INI file.
     
  • Dialup error 674: Cannot read the maximum connection BPS rate from the media .INI file.
     
  • Dialup error 675: Cannot read the maximum carrier BPS rate from the media .INI file.
     
  • Dialup error 676: The line is busy.

    Try this:
    - If you're using a phone service (e.g. hotel) that requires you to dial out in order to get a normal dial tone, you may need to add a pause to your modem's dialling sequence. One comma in the dialling sequence will make the modem pause for one second.
    - For example, if you have to dial 0 and then wait 2 seconds before dialling the dialup number, add two commas after the 0 (e.g. 0,,0198333955).
     

  • Dialup error 677: A person answered instead of a modem.

    Try this:
    - Make sure you're dialling the correct dialup number.
     

  • Dialup error 678: There is no answer.

    Try this:
    - If you're using a phone service (e.g. hotel) that requires you to dial out in order to get a normal dial tone, you may need to add a pause to your modem's dialling sequence. One comma in the dialling sequence will make the modem pause for one second.
    - For example, if you have to dial 0 and then wait 2 seconds before dialling the dialup number, add two commas after the 0 (e.g. 0,,0198333955).
     

  • Dialup error 679: Cannot detect carrier.

    Try this:
    - Make sure your Home Phone has a dial tone. If it doesn't, switch to No Dial Tone troubleshooting.
     

  • Dialup error 680: There is no dial tone.

    Try this:
    - Make sure your Home Phone has a dial tone. If it doesn't, switch to No Dial Tone troubleshooting.
    - If you're using a phone service (e.g. hotel) that requires you to dial out in order to get a normal dial tone, you may need to add a pause to your modem's dialling sequence. One comma in the dialling sequence will make the modem pause for one second.
    - For example, if you have to dial 0 and then wait 2 seconds before dialling the dialup number, add two commas after the 0 (e.g. 0,,0198333955).
    - Add "X3" to your modem string.
     

  • Dialup error 681: General error reported by device.
     
  • Dialup error 682: ERROR WRITING SECTIONNAME.
     
  • Dialup error 683: ERROR WRITING DEVICETYPE.
     
  • Dialup error 684: ERROR WRITING DEVICENAME.
     
  • Dialup error 685: ERROR WRITING MAXCONNECTBPS.
     
  • Dialup error 686: ERROR WRITING MAXCARRIERBPS.
     
  • Dialup error 687: ERROR WRITING USAGE.
     
  • Dialup error 688: ERROR WRITING DEFAULTOFF.
     
  • Dialup error 689: ERROR READING DEFAULTOFF.
     
  • Dialup error 690: ERROR EMPTY INI FILE.
     
  • Dialup error 691: Access denied because username and/or password is invalid on the domain.
     
  • Dialup error 692: Hardware failure in port or attached device.
     
  • Dialup error 693: ERROR NOT BINARY MACRO.

    Try this:
    - Check that the following files are in c:/windows/system32/ras/ and that they're read-only: pad.inf, modem.inf and switch.inf.
     

  • Dialup error 694: ERROR DCB NOT FOUND.
     
  • Dialup error 695: ERROR STATE MACHINES NOT STARTED.
     
  • Dialup error 696: ERROR STATE MACHINES ALREADY STARTED.
     
  • Dialup error 697: ERROR PARTIAL RESPONSE LOOPING.
     
  • Dialup error 698: A response keyname in the device .INF file is not in the expected format.

    Try this:
    - Check that the following files are in c:/windows/system32/ras/ and that they're read-only: pad.inf, modem.inf and switch.inf.
     

  • Dialup error 699: The device response caused buffer overflow.

    Try this:
    - Open the Start Menu and then open the Control Panel. Select Devices and Printers.
    - Right click on your modem and select Properties.
    - In the popup window, select the Modem tab and then make sure the Maximum Port Speed is set to the highest option. Click OK.
     

  • Dialup error 700: The expanded command in the device .INF file is too long.

    Try this:
    - A string inside a .inf file is greater than 256 characters. Try breaking the string down into multiple commands.
     

  • Dialup error 701: The device moved to a BPS rate not supported by the COM driver.
     
  • Dialup error 702: Device response received when none expected.

    Try this:
    - Check that the following files are in c:/windows/system32/ras/ and that they're read-only: pad.inf, modem.inf and switch.inf.
     

  • Dialup error 703: ERROR INTERACTIVE MODE.
     
  • Dialup error 704: ERROR BAD CALLBACK NUMBER.

    Try this:
    - Make sure you're dialling the correct dialup number.
     

  • Dialup error 705: ERROR INVALID AUTH STATE.
     
  • Dialup error 706: ERROR WRITING INITBPS.
     
  • Dialup error 707: X.25 diagnostic indication.

    Try this:
    - (Windows XP users) Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Options tab and then click the X.25 button at the bottom of the window.
    - In the next pop-up window, make sure that Network is set to None and that all of the text boxes are empty. Click OK.
     

  • Dialup error 708: The account has expired.
     
  • Dialup error 709: Error changing password on domain.
     
  • Dialup error 710: Serial overrun errors were detected while communicating with your modem.

    Try this:
    - Open the Start Menu and then open the Control Panel. Select Devices and Printers.
    - Right click on your modem and select Properties.
    - In the popup window, select the Modem tab and then reduce the Maximum Port Speed by one setting. Click OK and then try to connect again.
     

  • Dialup error 711: RasMan initialisation failure. Check the event log.
     
  • Dialup error 712: Biplex port is initialising. Wait a few seconds and redial.
     
  • Dialup error 713: No active ISDN lines are available.
     
  • Dialup error 714: Not enough ISDN channels are available to make the call.
     
  • Dialup error 715: Too many errors occurred because of poor phone line quality.

    Try this:
    - Check to see if your Home Phone has line noise. If it does, switch to Line Noise Troubleshooting.
     

  • Dialup error 716: The remote access IP configuration is unusable.
     
  • Dialup error 717: No IP addresses are available in the static pool of remote access IP addresses.
     
  • Dialup error 718: PPP timeout.

    Try this:
    - Please ensure you're connecting with the username and password for your dialup service, rather than another iiNet email address.
     

  • Dialup error 719: PPP terminated by remote machine.
     
  • Dialup error 720: No PPP control protocols configured.
     
  • Dialup error 721: Remote PPP peer is not responding.

    Try this:
    - Please ensure you're connecting with the username and password for your dialup service, rather than another iiNet email address.
     

  • Dialup error 722: The PPP packet is invalid.
     
  • Dialup error 723: The phone number, including prefix and suffix, is too long.

    Try this:
    - Please ensure you're dialling the correct dialup number.
     

  • Dialup error 724: The IPX protocol cannot dial-out on the port because the computer is an IPX router.

    Try this:
    - Make sure your computer is using TCP/IP settings to connect. Do not use IPX.
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "The connection uses the following items" make sure that Internet Protocol (TCP/IP) is ticked and then click OK.
     

  • Dialup error 725: The IPX protocol cannot dial-in on the port because the IPX router is not installed.

    Try this:
    - Make sure your computer is using TCP/IP settings to connect. Do not use IPX.
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "The connection uses the following items" make sure that Internet Protocol (TCP/IP) is ticked and then click OK.
     

  • Dialup error 726: The IPX protocol cannot be used for dial-out on more than one port at a time.

    Try this:
    - Please check that you're not already connected to dialup and trying to connect again.
    - Make sure your computer is using TCP/IP settings to connect. Do not use IPX.
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "The connection uses the following items" make sure that Internet Protocol (TCP/IP) is ticked and then click OK.
     

  • Dialup error 727: Cannot access TCPCFG.DLL.

    Try this:
    - Make sure that the file tcpcfg.dll is at c:/windows/system32/ and that it is read-only.
     

  • Dialup error 728: Cannot find an IP adaptor bound to remote access.

    Try this:
    - Reset your TCP/IP settings to default.
     

  • Dialup error 729: SLIP cannot be used unless the IP protocol is installed.

    Try this:
    - Make sure that TCP/IP is installed on your computer.
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "The connection uses the following items" look for Internet Protocol (TCP/IP). If it's there, tick it and click OK.
    - If it's not there, click Install and select Protocol. See if TCP/IP is available to install.
    - If TCP/IP isn't there, please contact your operating software provider for help on installing it.
     

  • Dialup error 730: Computer registration is not complete.
     
  • Dialup error 731: The protocol is not configured.

    Try this:
    - Add "AT&F&C1&D2" to your modem string. If that doesn't work, try "AT+MS=v34" instead.
     

  • Dialup error 732: The PPP negotiation is not converging.

    Try this:
    - Make sure there's only one winsock.dll file in c:/windows/
    - Make sure there's only one wsock32.dll file in c:/windows/system/
     

  • Dialup error 733: The PPP control protocol for this network protocol is not available on the server.
     
  • Dialup error 734: The PPP link control protocol terminated.

    Try this:
    - Please ensure you're connecting with the username and password for your dialup service (including "@iinet.net.au") rather than another iiNet email address.
     

  • Dialup error 735: The requested address was rejected by the server.

    Try this:
    - Make sure your dialup settings are set to "Obtain an IP address automatically".
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "This connection uses the following items" click Internet Protocol (TCP/IP) to highlight it and then click Properties.
    - Select Obtain an IP address automatically and then click OK.
     

  • Dialup error 736: The remote computer terminated the control protocol.

    Try this:
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "Type of dialup server I am calling" click Settings.
    - Untick Enable software compression and then click OK.
     

  • Dialup error 737: Loopback detected.
     
  • Dialup error 738: The server did not assign an address.
     
  • Dialup error 739: The remote server cannot use the Windows NT encrypted password.

    Try this:
    - When connecting to dialup, click Properties. Select the Security tab and make sure that no settings require encryption.
     

  • Dialup error 740: The TAPI devices configured for Remote Access failed to initialise or were not installed correctly.
     
  • Dialup error 741: The local computer does not support encryption.

    Try this:
    - When connecting to dialup, click Properties. Select the Security tab and make sure that no settings require encryption.
     

  • Dialup error 742: The remote server does not support encryption.

    Try this:
    - When connecting to dialup, click Properties. Select the Security tab and make sure that no settings require encryption.
     

  • Dialup error 743: The remote server requires encryption.

    Try this:
    - When connecting to dialup, click Properties. Select the Security tab and make sure that no settings require encryption.
     

  • Dialup error 744: Cannot use the IPX net number assigned by the remote server. Check the event log.

    Try this:
    - Make sure your computer is using TCP/IP settings to connect. Do not use IPX.
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "The connection uses the following items" make sure that Internet Protocol (TCP/IP) is ticked and then click OK.
     

  • Dialup error 745: An essential file is missing.
     
  • Dialup error 746: An essential file failed to initialise.
     
  • Dialup error 747: MAC not found.
     
  • Dialup error 748: The system timed out while trying to load an essential file.
     
  • Dialup error 749: Invalid phone number.
     
  • Dialup error 750: Invalid authentication attempt.
     
  • Dialup error 751: The callback number contains an invalid character. Only the following characters are allowed: 0 to 9, T, P, W, , (commas), -, @, and space.
     
  • Dialup error 752: A syntax error was encountered while processing a script.

    Try this:
    - If you're using a dialup script, please check it for errors.
     

  • Dialup error 753: The connection could not be disconnected because it was created by the multi-protocol router.

    Try this:
    - Please check that you're not already connected to the dialup. If you are, disconnect and try to connect again.
     

  • Dialup error 754: The system could not find the multi-link bundle.
     
  • Dialup error 755: The system cannot perform automated dial because this entry has a custom dialler specified.
     
  • Dialup error 756: This connection is already being dialed.
     
  • Dialup error 757: Remote access services could not be started automatically. Additional information is provided in the event log.
     
  • Dialup error 758: Internet connection sharing is already enabled on the connection.
     
  • Dialup error 760: An error occurred while routing capabilities were being enabled.

    Try this:
    - Do not use a static IP address when connecting to dialup.
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "This connection uses the following items" click Internet Protocol (TCP/IP) to highlight it and then click Properties.
    - Select Obtain an IP address automatically and then click OK.
     

  • Dialup error 761: An error occurred while Internet connection sharing was being enabled for the connection.
     
  • Dialup error 763: Internet connection sharing cannot be enabled. There are two or more LAN connections in addition to the connection to be shared.
     
  • Dialup error 764: No smart card reader is installed.
     
  • Dialup error 765: Internet connection sharing cannot be enabled. A LAN connection is already configured with the IP address required for automatic IP addressing.
     
  • Dialup error 766: The system could not find any certificate. Please obtain a valid certificate.
     
  • Dialup error 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.

    Try this:
    - Open the Start Menu and then open the Control Panel.
    - Select Network and Internet Connections and then click Network Connections.
    - Right-click your Dialup connection and select Properties.
    - In the pop-up window, select the Networking tab.
    - Under "This connection uses the following items" click Internet Protocol (TCP/IP) to highlight it and then click Properties.
    - Select Obtain an IP address automatically and then click OK.
     

  • Dialup error 768: The connection attempt failed because of failure to encrypt data.

    Try this:
    - When connecting to dialup, click Properties. Select the Security tab and make sure that no settings require encryption.
     

  • Dialup error 769: The specified destination is not reachable.
     
  • Dialup error 770: The remote machine rejected the connection attempt.

    Try this:
    - Open your Start Menu and select Search. Search for "telephon.ini".
    - If you find this file, rename it to "telephon.old".
    - Go back to the Start Menu and open Run (you may need to search for "run"). Type "tapiini.exe" into the Run text box and then click OK.
    - Restart your computer.
     

  • Dialup error 771: The connection attempt failed because the network is busy.
     
  • Dialup error 772: The remote computer's network hardware is incompatible with the type of call requested.
     
  • Dialup error 773: The connection attempt failed because the destination number has changed.

    Try this:
    - Please ensure you're dialling the correct dialup number.
     

  • Dialup error 774: The connection attempt failed because of a temporary failure. Try connecting again.
     
  • Dialup error 775: The call was blocked by the remote computer.
     
  • Dialup error 776: The call could not be connected because the destination has invoked the Do Not Disturb feature.
     
  • Dialup error 777: The connection attempt failed because the modem on the remote computer is out of order.
     
  • Dialup error 778: It was not possible to verify the identity of the server.

    Try this:
    - Please ensure you're dialling the correct dialup number.
     

  • Dialup error 779: To dial out using this connection, you must use a smart card.
     
  • Dialup error 780: An attempted function is not valid for this connection.
     
  • Dialup error 781: The encryption attempt failed because no valid certificate was found. Please obtain a valid certificate.
     
  • Dialup error 782: Network Address Translation (NAT) is currently installed as a routing protocol, and must be removed before enabling Internet Connection Sharing.
     
  • Dialup error 783: Internet Connection Sharing cannot be enabled.

    Try this:
    - The LAN connection selected as the private network is either not present, or is disconnected from the network. Please ensure that the LAN adaptor is connected before enabling Internet Connection Sharing.
     

  • Dialup error 784: You 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.

    Try this:
    - If you want to use it at logon time, you must configure it to use the user name on the smart card.
     

  • Dialup error 785: You cannot dial using this connection at logon time, because it is not configured to use a smart card.

    Try this:
    If you want to use it at logon time, you must edit the properties of this connection so that it uses a smart card.
     

  • Dialup error 786: The L2TP connection attempt failed because there is no valid machine certificate on your computer for security authentication.
     
  • Dialup error 787: The L2TP connection attempt failed because the security layer could not authenticate the remote computer.
     
  • Dialup error 788: The L2TP connection attempt failed because the security layer could not negotiate compatible parameters with the remote computer.
     
  • Dialup error 789: The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.
     
  • Dialup error 790: The L2TP connection attempt failed because certificate validation on the remote computer failed.
     
  • Dialup error 791: The L2TP connection attempt failed because security policy for the connection was not found.
     
  • Dialup error 792: The L2TP connection attempt failed because security negotiation timed out.
     
  • Dialup error 793: The L2TP connection attempt failed because an error occurred while negotiating security.
     
  • Dialup error 794: The Framed Protocol RADIUS attribute for this user is not PPP.
     
  • Dialup error 795: The tunnel type RADIUS attribute for this user is not correct.
     
  • Dialup error 796: The service type RADIUS attribute for this user is neither framed nor callback framed.
     
  • Dialup error 797: A connection to the remote computer could not be established because the modem was not found or was busy.
     
  • Dialup error 798: A certificate could not be found that can be used with this Extensible Authentication Protocol.
     
  • Dialup error 799: Internet Connection Sharing (ICS) cannot be enabled due to an IP address conflict on the network.

    Try this:
    - 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.
     

  • Dialup error 800: Unable to establish the VPN connection. The VPN server may be un-reachable, or security parameters may not be configured properly for this connection.
     
  • Dialup error 995: Operation aborted.
     
  • Dialup error 1382: Maximum length exceeded.
     
  • Dialup error 1793: Account expired.
     
  • Dialup error 2250: Network connection does not exist.

 

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