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Fixing WireGuard Handshake Errors on Windows - Troubleshooting 0x80073cf9 Installation Error-Fix Windows Update Error 0x80070005: Permission Issues

2026-06-13 13:02:20office-tools
Fixing WireGuard Handshake Errors on Windows - Troubleshooting 0x80073cf9 Installation Error-Fix Windows Update Error 0x80070005: Permission Issues

Final checklist

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