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Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN - How to Resolve NO_PUBKEY Error in Ubuntu-Save and Restore Network Drive Settings via Command Prompt

2026-06-14 02:23:33developer-tools
Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN - How to Resolve NO_PUBKEY Error in Ubuntu-Save and Restore Network Drive Settings via Command Prompt

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.