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Fix 'Windows Defender File Locked by Another Program' Error - Certbot Nginx Plugin Not Working: Fix Installation Errors-Windows Security Migration Checklist for IT Admins

Updated 2026-06-13 16:06:37developer-tools
Fix 'Windows Defender File Locked by Another Program' Error - Certbot Nginx Plugin Not Working: Fix Installation Errors-Windows Security Migration Checklist for IT Admins
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.