This error occurs when I use a desktop to dial up the Internet. Solve the problem and find that China Telecom will bind the Mac NIC address of the dial-up user for the first time, and it will be OK to configure the MAC address of the desktop to my notebook! Error 691 indicates that the user, password, or domain is incorrectly resolved. Step 1. the user password is correct. modify the NIC binding address, the entered value is automatically converted to uppercase, and you do not need to enter the "-" symbol to view the machine's MAC address method cmd> ipconfig/all. the value to be modified is the value of physical address. is the MAC address method. The above is the method for modifying the local connection, the following describes how to modify the network address of the NIC Driver in the Device Manager.
Solve ADSL dial-up Internet Access Error 691: access is denied because the user name and password in the domain are invalid
