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Fix 'npm command not found' on Linux - How to Fix SSL Certificate Error in Command Prompt-Troubleshooting 'Connection Refused' When Pinging

2026-06-14 12:40:50macos-help
Fix 'npm command not found' on Linux - How to Fix SSL Certificate Error in Command Prompt-Troubleshooting 'Connection Refused' When Pinging

Final checklist

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