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Fix Windows Defender Proxy Error Not Working - Reset DNS Cache to Fix Windows Search-Fix Windows Defender 504 Gateway Timeout Error

2026-06-13 19:59:03
Fix Windows Defender Proxy Error Not Working - Reset DNS Cache to Fix Windows Search-Fix Windows Defender 504 Gateway Timeout Error

Result check

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

Next references

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