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How to Set Up Python Virtual Environment Correctly - Fix Proxy Error in Windows Defender-Windows Update Authentication Failed Troubleshooting

Updated 2026-06-14 09:50:29developer-tools
How to Set Up Python Virtual Environment Correctly - Fix Proxy Error in Windows Defender-Windows Update Authentication Failed Troubleshooting
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.