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Fix Windows Defender Update Error 0x80240034 - Fixing 'Postman Unable to Verify SSL Certificate' Errors-Troubleshooting Windows Update Service Won't Start

2026-06-13 15:49:00office-tools
Fix Windows Defender Update Error 0x80240034 - Fixing 'Postman Unable to Verify SSL Certificate' Errors-Troubleshooting Windows Update Service Won't Start

Final checklist

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