I've been getting this error on way too many sites, and other than allowing Tor through Windows Firewall, I do not have the expertise to fix this issue, so I turn to you guys. Help, please?
If you can connect to some/most sites but not all, then your Tor setup is healthy. (Unless you have added restrictions to your torrc, but I guess you have not.) Most likely explanation would be that these sites have blocked traffic from Tor exit nodes.