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Fix Microsoft Store Authentication Failed Error - How to Fix Windows Defender Scanning Taking Too Long-Task Scheduler High CPU Usage: Troubleshooting Steps

Updated 2026-06-14 16:09:50windows-fixes
Fix Microsoft Store Authentication Failed Error - How to Fix Windows Defender Scanning Taking Too Long-Task Scheduler High CPU Usage: Troubleshooting Steps
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.