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Fix 'pip install externally managed environment' Error - Nginx Port 80 Connection Refused: Causes and Fixes-How to Restore Windows Security App in Windows 10/11

Updated 2026-07-28 23:15:36browser-issues
Fix 'pip install externally managed environment' Error - Nginx Port 80 Connection Refused: Causes and Fixes-How to Restore Windows Security App in Windows 10/11
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.

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