---
title: "DRM License Server 5.9.0"
description: "PlayReady Server SDK Updated: Upgraded from version 4.4 to 4.6.7674."
---
> For the complete documentation index, see [llms.txt](/llms.txt).

**PlayReady Server SDK Updated**: Upgraded from version 4.4 to 4.6.7674.

- **Enhanced Security**: Includes the latest Microsoft enhancements designed to strengthen PlayReady license security, significantly reducing vulnerabilities and protecting content against emerging threats.

- **Compatibility Improvements**: Ensures better compatibility with current streaming clients, devices, and browsers, providing a more stable and secure playback experience across all platforms.