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Fix OneDrive Sync Stuck on 'Processing Changes' - Resolve OneDrive 504 Error Step by Step-Windows Update Service Error Troubleshooting

Updated 2026-06-14 15:04:36developer-tools
Fix OneDrive Sync Stuck on 'Processing Changes' - Resolve OneDrive 504 Error Step by Step-Windows Update Service Error 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.