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Fixing Task Scheduler Connection Refused to SQL Server - Resolve Windows Defender 502 Bad Gateway with These Steps-Fix Outlook 404 Not Found Error in Microsoft 365

2026-06-13 20:59:11developer-tools
Fixing Task Scheduler Connection Refused to SQL Server - Resolve Windows Defender 502 Bad Gateway with These Steps-Fix Outlook 404 Not Found Error in Microsoft 365

Final checklist

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