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Fixing Task Scheduler Version Mismatch Configuration Errors - Resolve OneDrive Sync Unavailable in Outlook-How to Resolve Windows Defender Update Error 0x80070643

Updated 2026-06-15 10:41:49developer-tools
Fixing Task Scheduler Version Mismatch Configuration Errors - Resolve OneDrive Sync Unavailable in Outlook-How to Resolve Windows Defender Update Error 0x80070643
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.