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How to Fix Windows Defender Authentication Failed Error - Fix Microsoft Store High Memory Usage on Windows-Troubleshooting Office 365 Outlook 502 Bad Gateway

Updated 2026-06-13 20:50:21windows-fixes
How to Fix Windows Defender Authentication Failed Error - Fix Microsoft Store High Memory Usage on Windows-Troubleshooting Office 365 Outlook 502 Bad Gateway
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.