No internet

There is something wrong with the proxy server, or the address is incorrect.

Try:

Contacting the system admin
Checking the proxy address
Running Windows Network Diagnostics

ERR_PROXY_CONNECTION_FAILED

If you use a proxy server…

Go to the Chromium menu > Settings > Show advanced settings… > Change proxy settings… > LAN Settings and deselect the "Use a proxy server for your LAN" checkbox.

There is something wrong with the proxy server, or the address is incorrect.