# Sentinel LDK Run-time Environment Installer for macOS: Readme

Version 10.31

This document describes the Sentinel LDK Run-time Environment Installer for Mac, including enhancements and other relevant information.

## Operating Systems Supported

>macOS 15.7 Sequoia

>macOS Tahoe 26.4

For Mac machines with the ARM64-based processor:

>Sentinel LDK is supported via Rosetta 2.

> Sentinel Licensing API version 8.41 and later is supported natively.

The operating system versions listed above were tested by Thales and verified to be fully compatible with Sentinel LDK. For reasons of compatibility and security, Thales recommends to always keep your operating system up to date with the latest fixes and service packs.

CAUTION! Be sure to install this version of the Run-time Environment before you upgrade to a new version of the macOS operating system or repartition your hard drive. This is required in order to prevent possible corruption or deletion of any installed licenses.

## Web Browsers Supported for Sentinel EMS Operations

Sentinel LDK supports the Web browsers listed below for performing operations in Sentinel EMS that access protection keys.

>Mozilla Firefox (32-bit and 64-bit)

>Google Chrome (32-bit and 64-bit)

Safari (the default Web browser on the Mac) is not supported for these operations.