Hello cdbates,
this situation can be caused by a firewall blocking access to the Internet during AVG installation through AVG online installer (download manager).
Please check the AVG installation with full (offline) installation file from this website - 2nd or 3rd link, depends on your operating system.
If the situation still persists, please provide us with AVG installation logs, upload them in an archive (zip file) to favorite online storage and reply us with the link.
Thank you
I am trying to install AVG free 2011 on my toshiba C655, with windows 7, and I keep getting the message that it needs proxy authentication. I don't know what this means. Can you direct me where to find the info needed?

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