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Fix GitHub Actions Cache Action Permission Denied Error - How to Restore Defender Defaults Safely-Troubleshooting Error 0x800f081f in Windows Update

2026-06-13 12:58:11office-tools
Fix GitHub Actions Cache Action Permission Denied Error - How to Restore Defender Defaults Safely-Troubleshooting Error 0x800f081f in Windows Update

Final checklist

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