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Fix PowerShell Connection Refused Errors in Scripts - Fix Jupyter Kernel Not Connecting-Resolve Port Already in Use Error in VS Code

2026-06-15 16:43:09windows-fixes
Fix PowerShell Connection Refused Errors in Scripts - Fix Jupyter Kernel Not Connecting-Resolve Port Already in Use Error in VS Code

Final checklist

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