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Fix Windows Update Connection Timeout Due to Proxy Settings - Checklist for Debugging 502 Bad Gateway in Command Prompt-Fix Windows Defender Real-Time Protection Authentication Failed

Updated 2026-06-13 21:01:21developer-tools
Fix Windows Update Connection Timeout Due to Proxy Settings - Checklist for Debugging 502 Bad Gateway in Command Prompt-Fix Windows Defender Real-Time Protection Authentication Failed
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.