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Fix 'Port Already Allocated' Error in VS Code - Windows Command Prompt Setup for Beginners-Windows Defender Cannot Connect: Troubleshooting Checklist

Updated 2026-06-14 16:09:51cloud-software
Fix 'Port Already Allocated' Error in VS Code - Windows Command Prompt Setup for Beginners-Windows Defender Cannot Connect: Troubleshooting Checklist
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.