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Home / windows-fixes / Fix OneDrive Sync High CPU Usage with Error 0x8004de40 - Fix Missing Windows Defender in Windows 11-Step-by-Step Outlook Email Setup Instructions

Fix OneDrive Sync High CPU Usage with Error 0x8004de40 - Fix Missing Windows Defender in Windows 11-Step-by-Step Outlook Email Setup Instructions

2026-06-16 05:23:30windows-fixes
Fix OneDrive Sync High CPU Usage with Error 0x8004de40 - Fix Missing Windows Defender in Windows 11-Step-by-Step Outlook Email Setup Instructions

Final checklist

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