"Error 734: The PPP Link Control Protocol Was Terminated" Error Message Occurs If You Try to Establish a Dial-Up Connection

Symptoms

If you try to establish a Point-to-Point Protocol (PPP) dial-up connection, you may receive the following error message:
Error 734: The PPP link control protocol was terminated.
As a result, you cannot establish a dial-up connection.

Cause

This issue may occur if either of the following conditions are true:
  • Multi-link negotiation is turned on for the single-link connection.

    -or-
  • The dial-up connection security configuration is incorrectly configured to use the Require secured passwordsetting.

Resolution

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.

More Information

For additional information about how to troubleshoot a similar 'Error 734' error message, click the article number below to view the article in the Microsoft Knowledge Base:
282795 Windows 2000 RAS Error 734 with a Bianca/Brick-XS Multiple-Protocol Router
For additional information about how to use MSN Internet Services in Windows 2000, click the article number below to view the article in the Microsoft Knowledge Base:
238510 Using MSN Internet Services in Windows 2000