Google Chrome is a Web browser that is fast and simple; it is considered a minimalistic browser. It also features secure and stable Web surfing. Chrome seems to take some of its settings from your computer's Internet Options, which are adjusted by using Internet Explorer. So when a setting is wrong in IE, both Chrome and IE do not work and the connection is refused.
Start by checking the Internet connection through a different Web browser like Firefox. If this does not work, then check the network cables connections and the cables themselves. Ask yourself whether the problem started after a program installation or software update. Consider uninstalling the new software and check to see if it caused the IE and Chrome issue. Remove both browsers and reinstall the software to fix any corrupt settings.
Some programs, including viruses and malware programs, rewrite the Internet Option settings. The main setting that affects IE and Chrome in this situation is the “Use a proxy server for your LAN…” Unless set up properly this setting will block IE and Chrome’s access to the Internet. The quickest way to fix this cause is to open the IE Tools on the menu bar. Look under Internet Options in the Connections tab to find the LAN Settings option. Choose “Automatically Detect” from the list to gain Internet access.
Occasionally programs rewrite multiple settings in the Internet Options. These programs include viruses, adware, malware and add-ons. The settings change messes up both the IE and Chrome connection to the Internet. Look under the IE Tools Option for the ability to restore all settings to default. Check the connection after restarting the browser.
In September 2011, Microsoft Security Essentials targeted Google Chrome as malware and began removing the program until an update was sent out by Microsoft. Firewalls, anti-virus and security software can block Internet browsers. Norton and McAfee can cause connection problems if the programs do not automatically write an exception for IE and Chrome. Turn off the security programs and test the Internet connections. If a security program is causing the issue, start by updating each program and create an exception for the firewall part of the program.