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Fix pip Externally Managed Environment on Debian 12 - Why Python Virtual Environment Won't Activate After Install-Enable Windows Defender Real-Time Protection Forcibly

Updated 2026-07-28 07:26:47windows-fixes
Fix pip Externally Managed Environment on Debian 12 - Why Python Virtual Environment Won't Activate After Install-Enable Windows Defender Real-Time Protection Forcibly
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.