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Fix 'powershell not recognized as internal or external command' - Windows Security White Screen: Causes and Fixes-How to Fix Task Scheduler Rate Limit Error 0x1

2026-06-13 19:07:19developer-tools
Fix 'powershell not recognized as internal or external command' - Windows Security White Screen: Causes and Fixes-How to Fix Task Scheduler Rate Limit Error 0x1

Final checklist

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