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Making a VPN connection in Windows 7

    Question

  • When trying to login to a PPTP VPN server appliance I get an Error 741, The local computer does not support the required data encryption type.  I found a workaround for Vista, but it does not work for Win 7.  Is ther one for Win 7.
    Thursday, March 8, 2012 5:59 AM

Answers

  • Hi,

    The issue could be related to incompatible router or network adapter driver, security software blocking or spyware preventing the connection, etc.

    I suggest updating the network adapter driver on Windows 7 from manufacture's site and router firmware at the same time first. Booting in clean boot and disabling any security software or firewall.

    How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
    http://support.microsoft.com/kb/929135

    Also try the following KB. If it doesn’t work, recreate VPN connection to check the result.

    You receive a "741" or a "742" error message when you try to establish a VPN connection by using L2TP/IPsec from a Windows client computer to a VPN server
    http://support.microsoft.com/default.aspx?scid=kb;EN-US;929856

    If this issue persists, please open an elevated command and reset Winsock.
    >netsh winsock reset

    Then restart the computer and check the issue again.

    Monday, March 12, 2012 9:08 AM

All replies

  • HelloTimothy1996,

    Maybe this will help you with this error: http://support.microsoft.com/kb/929856

    ---

    Jonathanb

    Thursday, March 8, 2012 10:39 AM
  • Timothy,

    Can you provide a little background on how everything is setup, please?

    1. VPN server operating system version and service pack level.
    2. Is the VPN server a DC?
    3. Encryption settings in RRAS for VPN.
    4. TYpe of VPN in RRAS, such as PPTP, L2TP, or SSTP?
    5. How did you configure the VPN client on Windows 7? Default?

    .


    Ace Fekay
    MVP, MCT, MCITP Enterprise Administrator, MCTS Windows 2008 & Exchange 2007 & Exchange 2010, Exchange 2010 Enterprise Administrator, MCSE & MCSA 2003/2000, MCSA Messaging 2003
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    Microsoft MVP - Directory Services
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    This posting is provided AS-IS with no warranties or guarantees and confers no rights.

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    Friday, March 9, 2012 6:53 PM
  • HelloTimothy1996,

    Maybe this will help you with this error: http://support.microsoft.com/kb/929856

    ---

    Jonathanb

    That's for L2TP, here's the one for PPTP:

    http://support.microsoft.com/kb/929857


    MCP Windows Server MCTS .NET

    Saturday, March 10, 2012 10:31 AM
  • You could try allowing all types of encryption in the client settings. Some appliances only support older types of encryption.

    MCP Windows Server MCTS .NET

    Saturday, March 10, 2012 10:32 AM
  • Hi,

    The issue could be related to incompatible router or network adapter driver, security software blocking or spyware preventing the connection, etc.

    I suggest updating the network adapter driver on Windows 7 from manufacture's site and router firmware at the same time first. Booting in clean boot and disabling any security software or firewall.

    How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
    http://support.microsoft.com/kb/929135

    Also try the following KB. If it doesn’t work, recreate VPN connection to check the result.

    You receive a "741" or a "742" error message when you try to establish a VPN connection by using L2TP/IPsec from a Windows client computer to a VPN server
    http://support.microsoft.com/default.aspx?scid=kb;EN-US;929856

    If this issue persists, please open an elevated command and reset Winsock.
    >netsh winsock reset

    Then restart the computer and check the issue again.

    Monday, March 12, 2012 9:08 AM