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If you are getting ERR_TUNNEL_CONNECTION_FAILED while trying to access certain websites using Microsoft Edge Web Browser, then you can try the below options to fix the issue,

Fix: Disable Proxy Setting

  1. Press Windows + R to open Run Dialog,

  2. Type inetcpl.cpl and open,

  3. Make sure under Connections -> LAN Settings "Automatically detect settings" is enabled,

  4. Also make sure "Proxy server" is not selected.


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