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Fix Windows Security High Memory Usage: Practical Steps - Windows Defender Firewall Blocking Ports – How to Fix-How to Fix ERR_TUNNEL_CONNECTION_FAILED in Chrome Due to Antivirus

Updated 2026-06-13 16:06:02browser-issues
Fix Windows Security High Memory Usage: Practical Steps - Windows Defender Firewall Blocking Ports – How to Fix-How to Fix ERR_TUNNEL_CONNECTION_FAILED in Chrome Due to Antivirus
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.