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Fix Windows Activation Port Already Allocated & Firewall Errors - Windows Terminal White or Black Screen: PowerShell Fix-Windows Defender Access Denied Malware Fix

2026-06-13 16:21:26office-tools
Fix Windows Activation Port Already Allocated & Firewall Errors - Windows Terminal White or Black Screen: PowerShell Fix-Windows Defender Access Denied Malware Fix

Final checklist

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