zhizhu
Home / developer-tools / Fix Windows Update Authentication Failed Error - Fix Chrome DNS Probe Finished Bad Config Error-Fix Windows Defender Real-Time Protection Turning Off

Fix Windows Update Authentication Failed Error - Fix Chrome DNS Probe Finished Bad Config Error-Fix Windows Defender Real-Time Protection Turning Off

Updated 2026-06-14 10:24:22developer-tools
Fix Windows Update Authentication Failed Error - Fix Chrome DNS Probe Finished Bad Config Error-Fix Windows Defender Real-Time Protection Turning Off
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.