Hi,
That url page opens up two on Windows 7 Home systems running AVG and Avast using CenturyLink and Comcast:
https://accs-api.amazingcharts.net:49060/CredentialsService/CredentialsService.svc
If you limit your browsing to AC tech support, you're safe enough.
You can open AVG from its taskbar icon and disable it until restart
(You can reopen AVG by the same icon and restart it.)
see if that lets your browser connect
Possibly your Windows firewall is blocking the site?
control-panel
windows firewall
turn windows firewall on or off
turn it off and ignore the warning
see if that lets your browser connect
Possibly you installed a firewall program from AVG or another company?
ctrl-alt-del
start task-manager
click on processes tab to see what's running
click on the description heading to sort by name
see if anything like a firewall is mentioned
figure out how to stop it
see if that lets your browser connect
Restart in safe mode with network
See if that lets your browser connect
if so, some program is interfering
Possibly your modem/router has a firewall set?
much trickier
Cheers,
Carl Fogel