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Fix Windows Defender Real-Time Protection Authentication Failed - How to Fix 'Not Recognized' in Windows 11 PowerShell-Certbot Nginx Plugin Error Log Analysis and Fixes

2026-06-13 17:45:48windows-fixes
Fix Windows Defender Real-Time Protection Authentication Failed - How to Fix 'Not Recognized' in Windows 11 PowerShell-Certbot Nginx Plugin Error Log Analysis and Fixes

Final checklist

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