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Fix Windows Defender Sync Error 504 Gateway Timeout - Windows Search Not Showing Results Fix-Set CMD as Default Terminal App in Windows 11

2026-06-14 05:34:14
Fix Windows Defender Sync Error 504 Gateway Timeout - Windows Search Not Showing Results Fix-Set CMD as Default Terminal App in Windows 11

Result check

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