A proxy server is an intermediary between the Internet and Web browsers. The Internet Explorer Web browser by default automatically detects proxy server settings. However, you will have to manually change the proxy settings in certain instances, such as connecting to the Internet through a secure network environment. If you no longer need the new proxy settings, you can restore the original configuration by accessing the "Internet Options" utility in Internet Explorer.
Launch Internet Explorer. Click "Tools" from the menu bar, then select "Internet Options" from the drop-down list. The Internet Options window will open.
Click the "Connections" tab, then select the "LAN Settings" button. Select the check boxes next to "Automatically detect settings" and "Use automatic configuration script" in the "Automatic configuration" section.
Click the check box next to "Use a proxy server for your LAN" in the "Proxy server" section, then click "OK." Click the "Apply" button, then "OK" and restart Internet Explorer.
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