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Fix Blue Screen After Windows 11 Feature Update - Fix Windows Security App Not Starting on Windows 11-Fix Python UnicodeDecodeError with errors='ignore'

Updated 2026-07-28 13:45:49office-tools
Fix Blue Screen After Windows 11 Feature Update - Fix Windows Security App Not Starting on Windows 11-Fix Python UnicodeDecodeError with errors='ignore'
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.