How to fix 'Unable to connect to the proxy server' Error Code: ERR_PROXY_CONNECTION_FAILED in Chrome

How to fix 'Unable to connect to the proxy server' Error Code: ERR_PROXY_CONNECTION_FAILED in Google Chrome. Sometimes you can see the message 'Unable to connect to the proxy server' in chrome browser. This mean that the proxy connection is keep alive but unable to connect to the server. Solution: How to fix - Go to Advanced settings in chrome browser and scroll down to Network, then open 'change proxy settings'. Now, Internet properties window will appear, open LAN settings and deselect the option 'Use a proxy server for your LAN'. Since, using proxy server for LAN having mobile data connection might causes this error. Also, check the proxy address. Note: To fix this error 'Unable to connect to the proxy server' in chrome avoid using proxy server for LAN (Local Area Network). Or, you can use dial up or VPN without proxy server.