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How to Fix Windows Defender 502 Bad Gateway Error - Windows 10 Windows Security Network Error Troubleshooting-How to Fix Teams Microphone Error 0x80070426

Updated 2026-06-13 14:33:19browser-issues
How to Fix Windows Defender 502 Bad Gateway Error - Windows 10 Windows Security Network Error Troubleshooting-How to Fix Teams Microphone Error 0x80070426
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.