September 2026 Windows Assessment and Deployment Kit (ADK) 10.1.26100.9457

The Windows Assessment and Deployment Kit (Windows ADK) and Windows PE add-on has the tools you need to customize Windows images for large-scale deployment, and to test the quality and performance of your system, its added components, and the applications running on it. The Windows ADK includes:

• The Windows Assessment Toolkit and the Windows Performance Toolkit to assess the quality and performance of systems or components.
• The Compatibility Administrator and the Standard User Analyzer tool.
• Deployment tools such as Windows PE, Sysprep, and other tools that you can use to customize and deploy Windows 11 images.
• The Windows Preinstallation Environment (Windows PE) as a separate download from the Assessment and Deployment Kit (ADK). To add Windows PE to your ADK installation, download and install the Windows PE add-on after installing the ADK.

The Windows ADK 10.1.26100.9457 (September 2026), serviced with the latest ADK patch, and the Windows PE add-on for this ADK support the following OS releases:

• Windows 11, version 26H2, 25H2, 24H2 and all earlier supported versions of Windows 10 and 11
• Windows Server 2025, and Windows Server 2022

Get the Windows ADK:

• Download the Windows ADK 10.1.26100.9457 (September 2026)
• Download the Windows PE add-on for the Windows ADK 10.1.26100.9457 (September 2026)
• To learn more about the latest ADK patch for ADK 10.1.26100.9457 (September 2026) go to the Download and Install the Windows ADK Patches page.
• What's new in the Windows ADK
• For Windows 10 IoT Core, also download the IoT Core Add-Ins.