A list of common error codes received when establishing a manual PPPoE connection:
This is a dial-up error indicating "the line is busy". If this error appears when establishing a PPPoE connection, delete the connection and recreate it
The computer can not send traffic through the DSL modem. Make sure all cables are connected correctly and that the DSL modem is receiving a DSL signal. You will also receive this error if you try to establish a PPPoE connection while connected to a router.
The username/password on the connection is incorrect. Make sure the correct username/password for your DSL account is being used.
Indicates the network card is not enabled.
Error 721 or 777:
Possible outage on ISP side.
Usually occurs after upgrading to a new version of Windows and permissions aren't correct, preventing the use of an existing PPPoE connection. Remove the connection and recreate it
. If unsuccessful, create the connection from a Windows administrator account.