I have one computer on my network here that cannot access yahoo mail, or gmail. Yahoo.com comes up ok, but when you click on mail icon, which would normally take you to username/password screen, a Error 404 page not found error comes up. Every other machine in the building can access yahoo mail so not a hardware firewall issue. I had temproarily shut down the software firewall, and checked the blocked sites, and added yahoo.com to the safe sites list.
Gmail.com gives the error message just by trying to navigate to it. Error 404 page not found.
The day before this started AVG reported startpage.cza trojan, but all my research on the infected file showed it was a false positive.
I also looked at the registry, but saw nothing obvious, although I am not an expert on registry entries.
Any help would be greatly appreciated.
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