Personal Computer Fixes

How To Fix Error 734 On Windows

Error 734 is a problem that’s caused by the connection settings of your PC not working correctly. It’s either going to be the case that your system will have problems with the password / security settings of the network, or that your computer will have problems with the connectivity of the network itself. If you’re experiencing this problem, it generally means that your system will not be able to connect to the various remote networks that you need.

This error will typically appear in this format:

  • Error 734: The PPP link control protocol was terminated.

What Causes The 734 Error?

There are 2 causes of this error:

  • Multi-link negotiation is turned on for the single-link connection.


  • The dial-up connection security configuration is incorrectly configured to use theRequire secured password setting.

How To Fix The 734 Error

Step 1 – Set The “Multi-Link Connections” For Your PC

  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 toNetwork 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.

Step 2 – Clean Out The Registry Of Your PC

The “registry” is going to be one of the main causes of the 734 error, and will be caused by the way in which your system will not be able to read the files or options that it needs to run. The registry is basically a central database which stores all the important information and settings that Windows will use to run, and is used to help load up the likes of your most recent emails, desktop wallpaper and even your passwords. If you’re experiencing problems with the registry, you have to be able to clean out any of the problems that this part of your system will have, which can be done by using a registry cleaner tool.

We’ve found that a registry cleaner called “RegAce System Suite 2.0” is the best at fixing the various errors that your system may have. You can download this tool from the image below:

» Download Windows Repair Tool


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