error 815 connecting through WAN miniport (PPOE)

I've just begun using my new laptop and have encountered a problem. I've set
up a wireless router, use a cable modem and both are working great. Now, when
I go into Ebay the "Connecting to Broadband" Error 815 . . . . appears. I
close it down and in a minute it reappears. I have now idea what is going on.
I'm connected with no problem through my wireless router and have no idea why
this is happening, I do have a modem (for dial-up) installed on this computer
(it came that way) but have no reason to active or use it.

How can I disable this? Thanks!!

Error 815 is an authentication error to the server. You should check with
your ISP to make sure you have all the software and settings needed in order
to connect.

[vilebillc]

I found this site that might help. I am using vista home premium, but it should work for all 815 errors. Good luck.

[slp11]

I am having a similar issue so thought I would add a post and see if anyone can assist.

My internet has been working fine until 2 days ago when it suddenly stopped working. I am using Vista and direct ethernet connection from laptop to modem.

I have called the ISP (Comcast) and they have checked all the settings on my computer. The network connection is working properly, as I am able to connect to internet from another computer with XP installed. However, the two computers I have with Vista don't work, both getting an error 815 message.

ISP suggested I call Microsoft, as they have a note that this is a Vista patch issue, however Microsoft won't provide tech assistance until I have called the manufacturer. Both versions of Vista are OEM copies, but the manufacturers are different.

The laptop works fine using a different cable connection, I have tried resetting the modem, powering off everything, changing registry settings, deleting and re-adding the Broadband PPPoE network setting, and accessing the modem to add MAC addresses (but can't get in using 10.1.1.1 or 192.168.254.254).

Any suggestions greatly appreciated.