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Fix 'Connection Refused' Error on localhost in CMD - How to Fix Windows Update Error 0x80070002-Chrome ERR_TUNNEL_CONNECTION_FAILED: Antivirus Blocking Troubleshoot

2026-06-14 14:26:38
Fix 'Connection Refused' Error on localhost in CMD - How to Fix Windows Update Error 0x80070002-Chrome ERR_TUNNEL_CONNECTION_FAILED: Antivirus Blocking Troubleshoot

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

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