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Fix Windows Defender Real-Time Protection Turned Off & Connection Refused - Troubleshoot High CPU from Windows Security Update-Windows Security Service Failed to Start: Guide

Updated 2026-06-13 15:35:56office-tools
Fix Windows Defender Real-Time Protection Turned Off & Connection Refused - Troubleshoot High CPU from Windows Security Update-Windows Security Service Failed to Start: Guide
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Operational follow-up

  • Record the exact option, command, or setting that changed the result.
  • Keep a rollback note if the workflow affects shared files or team settings.

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