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Fix Windows Security Cache Not Clearing: Step-by-Step Guide - Troubleshooting Windows Defender 504 Timeout-Error 0x80070422: Windows Security Service Not Starting Fix

2026-06-13 18:47:32developer-tools
Fix Windows Security Cache Not Clearing: Step-by-Step Guide - Troubleshooting Windows Defender 504 Timeout-Error 0x80070422: Windows Security Service Not Starting 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.

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