Lightweight Windows 11 version finally gets an update

Microsoft has unveiled the latest iteration of Validation OS, a streamlined version of Windows 11 tailored specifically for hardware validation, error diagnosis, and quality control in the production of Windows devices.

The newly released version 2504 brings a host of enhancements, particularly in .NET support, driver management, and USB boot capabilities.

Targeted at OEMs, hardware manufacturers, and system integrators, Validation OS operates through a command-line interface (CLI), which significantly boosts reliability and performance. Microsoft envisions this operating system as a vital link between the hardware development phase and the consumer-ready Windows OS. With support for Win32 applications, existing tools can be utilized effortlessly throughout the production and testing phases.

Among the notable features introduced in the 2504 release are:

  • Support for running WPF applications and .NET runtime via the new Microsoft-WinVOS-WPF-Support package.
  • Inclusion of Surface Dock drivers within the standard driver package.
  • Enhancements to USB boot functionality, allowing configuration of RAM disk size through DISM (Deployment Image Servicing and Management).
  • Separation of Chinese, Japanese, and Korean fonts (CJK) from the general font package, streamlining installation and management.
  • A transition to the latest and most secure implementation of .NET.

Not all issues resolved

While this update introduces several bug fixes, Microsoft acknowledges that some known issues persist. For instance, the combination of Bluetooth and Serial Console packages on ARM64 systems may still result in instability and crashes.

This update builds upon earlier releases that added essential features such as the Out of Box Experience (OOBE), fundamental network drivers, and Hyper-V-compatible VHDX images. Additionally, an experimental script was introduced to facilitate the conversion of WIM images to custom VHDX files.

Though Validation OS is not designed for end users, it provides substantial advantages for manufacturers and IT professionals engaged in the production, validation, and quality assurance of Windows hardware. The latest build (2504) is now available for download from the official Microsoft page.

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Lightweight Windows 11 version finally gets an update