Occasionally on my Media Center (running Windows 7) I have to download something from the internet to install. I use Internet Explorer 8 (over my normal favourite, Firefox) simply because it's there.
However whenever I browse sites, I keep getting a pop-up entitled "Windows Security" with the following message:
The server s0.2mdn.net at requires a username and password
Warning: This server is requesting that your username and password be sent in an insecure manner (basic authentication without a secure connection)
(there is a double space between "at" and "requires a username")
I'm fully aware of how sites can be set up for basic security but I've never heard of this site, I don't seem to find out much about it apart from that it seems to belong to doubleclick (online ads) and I have no idea why it is popping up authentication requests. I never see it when I browse on IE or Firefox on any of the other computers.
Any ideas what is it and how I stop it doing this? At present, I just hit Cancel until it goes away.