"Error 691" or "Error 734"

"Error 691" or "Error 734" When You Attempt to Establish a Connection in Windows XP

SYMPTOMS

When you attempt to establish a dial-up connection, you may receive an error message similar to one of the following:
Error 691: The computer you are dialing in to cannot establish a Dial-Up Networking connection. Check your password, and then try again.
-or-

Error 691: Access was denied because the username and/or password was invalid on the domain.

-or-

Error 734: The PPP link control protocol was terminated.
As a result, you cannot establish a dial-up connection.

CAUSE
This behavior can occur if any of the following conditions are true: • The Include Windows logon domain check box is selected in the Options tab of the dial-up connection's Properties dialog box.
-or-
• An incorrect user name or password is used.
-or-
• The dial-up connection's security option is incorrectly configured to use the Require secured password setting.


RESOLUTION
To resolve this behavior, follow these steps: 1. Click Start, point to Connect To, and then click your dial-up connection.
2. Click Properties, and then click the Options tab.
3. Click to clear the Include Windows logon domain check box (if it is selected), and then click OK.
4. Click Dial.• If this procedure resolves the issue, and you can establish a dial-up connection; you do not need 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 5 to further troubleshoot this issue.

5. In the Connect dialog box, verify that your user name and password are correctly typed in the User name and Password boxes, and then click Dial.• If this procedure resolves the issue, and you can establish a dial-up connection; you do not need 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 6 to further troubleshoot this issue.

6. Click Start, point to Connect To, and then click your dial-up connection.
7. In the Connect dialog box, 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.