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Fix OneDrive 'Token Expired' Sync Error - Resolve Windows Defender Update Server Not Reachable-Jupyter Kernel Not Starting: Quick Fixes

2026-06-13 23:45:29developer-tools
Fix OneDrive 'Token Expired' Sync Error - Resolve Windows Defender Update Server Not Reachable-Jupyter Kernel Not Starting: Quick Fixes

Final checklist

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