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How to Fix Windows Security DNS Error 0x800704cf - PowerShell 504 Gateway Timeout REST API Fix-Windows Defender Exclusions for Gaming Performance

2026-06-13 21:42:41
How to Fix Windows Security DNS Error 0x800704cf - PowerShell 504 Gateway Timeout REST API Fix-Windows Defender Exclusions for Gaming Performance

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.