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Proposed AnswerError 734: The PPP Link Control Protocol Was Terminated

  • Tuesday, October 31, 2006 4:57 PMAganack1 Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I'm trying to connect to my universties vpn which uses pptp, but everything i try comes up with Error 734: The PPP Link Control Protocol Was Terminated.  Any suggestions.
     

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  • Monday, November 20, 2006 9:14 PMmbmpcpro Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I get the same thing on Windows Vista build 6000 (Final). We can't get any machines to dial in at all! They all get Error 734: The PPP control protocol has terminated. Please someone give some advice.
     
  • Thursday, December 14, 2006 6:38 PMiqbaliqbal Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    i am copy-pasting the solution fron microsoft article :

    To resolve this issue:
    1.Click Start, point to Settings, and then click Network and Dial-up Connections.

    NOTE: For Windows Server 2003, click Start, point to Control Panel, and then point to Network Connections.
    2.Right-click the appropriate dial-up networking connection, and then click Properties.
    3.Click the Networking tab, and then click Settings.
    4.Click to clear the Negotiate multi-link for single link connections check box (if it is selected).
    5.Click OK, and then click OK.
    6.Double-click the connection, and then click Dial.
    •If this procedure resolves the issue and you can establish a dial-up connection, you do not have to follow the remaining steps in this article.
    •If this does not resolve the issue and you cannot establish a dial-up connection, go to step 7 to continue to troubleshoot this issue.
    7.Right-click the connection, and then click Properties.
    8.Click the Security tab.
    9.Under Security options, click Allow unsecured password in the Validate my identity as follows box, and then click OK.
    10.Double-click the connection, and then click Dial to verify that you can establish a dial-up connection.
    If u want to read it directly, go to:


     
  • Tuesday, March 20, 2007 4:41 AMcanz Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I have same problem when I use my new laptop with new windons Vista to dialup, it said "Error 734: The PPP Link Control Protocol Was Terminated" even I changed the set on Allow unsecured password, unchecked Enable LCP extensions and Negotiate multi-link for single link connections, unckecked Include windows logon domain, unchecked require encryted password, no callback in DUNS setup. Could you please give me more suggestions to set dial-up connection (my old desktop with Windons 2000 works well).
     
  • Wednesday, March 21, 2007 2:11 AMnosispower Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I am also trying to connect to my school's VPN and I get the same error. I've tried disabling/enabling a million different things in the VPN properties. Is there anything else I can do to try to get it to work?

    VPN was a cinch to setup and use with XP and I never had any problems. Is there an XP client out there so I can get VPN to work again without reverting to XP?
     
  • Tuesday, March 27, 2007 8:56 AMAanand Ramachandran Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Folks,

        It would really help if one of you could provide me the following logs. This will help us investigate..

     

    RAS Logs
       Execute the following from elevated command prompt

     • netsh ras set tr * en   (This enables RAS tracing)
       • <recreate the issue>
       • netsh ras set tr * di  (This disables RAS tracing)

       This will generate log files in the %windir%\tracing directory. Please zip the files and send them to rrasblog@Microsoft.com. Please mention the error code and error string in the subject line

     

    thanks

       Aanand

     
  • Tuesday, April 10, 2007 8:36 AMJanani Vasudevan_MSFT Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Please see the blog post at http://blogs.technet.com/rrasblog/archive/2007/04/08/troubleshooting-vista-vpn-problems.aspx for more information on the Windows Vista VPN issues and steps to resolve/troubleshoot them.

     

    Thanks,

    Janani

     
  • Monday, October 01, 2007 12:24 AMRavi K N Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    As suggested in the technet blog, I tried changing the default value of the allowweakcrpto variable to 1 for PPTP, in my system registry. The problem (VPN error 734) persists. Can anyone help?

     

     
  • Thursday, December 20, 2007 12:56 PMSmartfbs Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I did found a way out...under security, uncheck "require data encryption( disconnect if none")...that did it for me.
     
  • Thursday, April 17, 2008 2:29 AMaeneasl Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    modify the authentication protocol to "ppp authentication ms-chap ms-chap-v2" at cisco ios software
     
  • Sunday, November 09, 2008 6:31 AMaarem Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi canz,

    How did you finally fix the problem?

     

     
  • Sunday, October 25, 2009 7:56 PMKeith Taylor Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     Proposed Answer
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    Just got the same issue with Windows 7 Home Premium. Turning OFF CHAP and leaving MS-CHAP v2 enabled fixed it for me. Having both on together caused Error 734 every time.

    I hope that helps someone.

    Keith.
    • Proposed As Answer byV_Kumar Tuesday, January 05, 2010 1:14 PM
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  • Tuesday, January 05, 2010 1:13 PMV_Kumar Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Thanks Keith, turning OFF CHAP and leaving CHAP v2 worked for me as well

     
  • Monday, January 25, 2010 6:14 AMFDJONES5260 Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Having the same problem with Window7, trying to dial up and connect with an unsecured authentication.  This is required by the connection ISP.  Have tried almost every combination and all suggestions.  Nothing works, still get 734 error.  Works fine on Windows XP.  If I could get the modem to work under Virtual XP I would use it.  Have tried all avenues there.  Finally got the networking working under Virtual Machine.  Quite tricky.