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Fix Windows Update Service Fails to Start After Update - How to Fix CMD Crash Loop in Windows 10-Task Scheduler 0x80070020: Port Conflict Troubleshooting

Updated 2026-06-13 20:37:56office-tools
Fix Windows Update Service Fails to Start After Update - How to Fix CMD Crash Loop in Windows 10-Task Scheduler 0x80070020: Port Conflict Troubleshooting
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.