The proxy server isn’t responding

Check your proxy settings 127.0.0.1:8800.
Go to Tools > Internet Options > Connections. If you are on a LAN, click “LAN settings”.
Make sure your firewall settings aren’t blocking your web access.
Ask your system administrator for help.
　
I get this sometimes -on IE and Firefox-when unstalling programs. Even though I am connected to the Web as it shows when go to the task bar and it shows me connected I am not on Lan but on Brighthouse wirelss.
　
The proxy server is refusing connections
　
Firefox is configured to use a proxy server that is refusing connections.
　
Check the proxy settings to make sure that they are correct.
Contact your network administrator to make sure the proxy server is working.