Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
Thus, you have to disable the proxy server for your LAN. If your PC was just attacked by some adware or malware as of late, it is possible that it has changed the network settings in the system and might display spam advertisements.
Option 1 – Try disabling the proxy server for your LAN To resolve the ERR_TUNNEL_CONNECTION_FAILED error in Chrome, here are some suggestions you can check out. This kind of error in Chrome can occur due to incorrect website domain configuration, conflicting browser data, incorrect proxy settings, and DNS connection issues. If you happen to encounter this error, then this post could help you resolve it. One of the errors you can encounter while browsing the web using your Google Chrome browser is the ERR_TUNNEL_CONNECTION_FAILED error. How to Fix ERR TUNNEL CONNECTION FAILED error on Chrome in Windows 10