Version 4.1 brought several improvements over its predecessors:

Emailed admins the moment a lockout occurred.

If the current Netwrix site redirects older versions to new products, you can check:

NetWrix Account Lockout Examiner 4.1 is a lightweight, effective tool for diagnosing account lockouts in legacy or air-gapped AD environments. For current infrastructures, consider upgrading to NetWrix’s newer free Lockout Examiner (v5+ or the renamed product) if available, but v4.1 remains a reliable fallback.