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Fix 'Connection Refused' Error on localhost in CMD - Fix Windows Defender Login Loop Using Command Prompt-How to Fix PuTTY Connection Refused on Ubuntu

2026-06-13 20:02:52cloud-software
Fix 'Connection Refused' Error on localhost in CMD - Fix Windows Defender Login Loop Using Command Prompt-How to Fix PuTTY Connection Refused on Ubuntu

Final checklist

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