Because .7z is not natively supported by all operating systems, you may need dedicated software to open it.

Understanding the LBC2.7z Archive: Usage, Security, and Best Practices

For those who prefer not to install new software, tools like Unzip One can handle .7z extraction on Windows. Security Considerations

Supports strong AES-256 encryption, allowing users to password-protect the contents. How to Open LBC2.7z