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Fix 'Command Prompt Not Found' Error After Windows Update - How to Resolve 504 Gateway Timeout in Windows Security-Docker Compose Port Already Allocated But Free Fix

2026-06-17 03:23:06developer-tools
Fix 'Command Prompt Not Found' Error After Windows Update - How to Resolve 504 Gateway Timeout in Windows Security-Docker Compose Port Already Allocated But Free 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.