Running Squid on localhost - proxy

Question

I have a product form Symantec and their help is...less than helpful, including a nice message that says "Contact your reseller" in the "Contact Us" link. My reseller says to contact them. How? Anyways, it's a repackaged version if Squid for Windows. When I point IE to the proxy running locally I get "Access Denied. Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect." However, when I point IE on another machine to the server running Squid everything works fine.
I have zero experience with Squid or proxies. I tried some different configs based on searches here but nothing worked. I'm sure it's something simple. Here is the config:
digest_generation off
hierarchy_stoplist cgi-bin ?
acl all src 0.0.0.0/0.0.0.0
cache deny all
maximum_object_size 0 KB
emulate_httpd_log on
debug_options ALL,1
cache_store_log none
access_log none
useragent_log none
auth_param ntlm program c:/clientsiteproxy/libexec/mswin_ntlm_auth.exe
auth_param ntlm children 80
auth_param ntlm keep_alive on
auth_param negotiate children 80
auth_param basic children 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
auth_param basic casesensitive off
authenticate_ip_shortcircuit_ttl 30 seconds
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
read_timeout 15 minutes
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 563 # https, snews
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl Smartconnect dstdomain ned.webscanningservice.com
acl CONNECT method CONNECT
acl authproxy proxy_auth REQUIRED
acl our_networks src 192.168.0.0/16 172.16.0.0/12 10.0.0.0/8 169.254.0.0/16
acl HEAD method HEAD
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow HEAD
http_access deny !our_networks
http_access allow Smartconnect
http_access allow authproxy
http_access deny all
icp_access allow all
httpd_suppress_version_string on
visible_hostname ClientSiteProxy
forwarded_for off
header_access Via deny all
never_direct allow all
cache_dir null c:/ClientSiteProxy
coredump_dir c:/clientsiteproxy/var/cache
http_port 3128

Answer 1

This is most likely the culprit: http_access deny !our_networks. This statement denies outbound access for all source IPs apart from 192.168.0.0/16 172.16.0.0/12 10.0.0.0/8 169.254.0.0/16.
When you browse from the same machine, browser would bind on localhost, so you can try expanding the our_networks definition with 127.0.0.1.