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Windows Security App Not Opening: Practical Fixes - Fix Blue Screen Loop After Windows 11 Update-Resolving 'index.lock file exists' in Git on macOS

Updated 2026-07-28 10:20:28office-tools

Windows Security App Not Opening: Practical Fixes - Fix Blue Screen Loop After Windows 11 Update-Resolving 'index.lock file exists' in Git on macOS

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.