With the KB5127936 Preview Update for Windows 11 version 26H2 (OS Build 26300.9818) released on October 28, 2026, Microsoft has introduced Cloud rebuild.
This recovery option reinstalls Windows 11 by downloading a fresh system image and essential device drivers directly from Windows Update. It functions even when Windows is unable to start properly, eliminating the need for installation media like USB drives or custom recovery images.
Key Features
- Drive Sanitization: Choose between removing standard files or performing a secure hardware-level data wipe before reinstalling Windows.
- Note: Drive sanitization is permanent and irreversible.
- Remote IT Management: IT administrators can deploy and initiate a Cloud rebuild across managed devices remotely via the Recovery CSP using either the existing OS build or a targeted build version.
Access the Cloud Rebuild Tool
Choose method based on system boot status.
- From Windows Desktop: Open Settings (Windows Key + I), go to System > Recovery, and select Rebuild PC. Your system will reboot into the Windows Recovery Environment (WinRE).
- If System Won't Boot: After repeated startup failures, Windows will automatically trigger WinRE. Navigate to Troubleshoot > Cloud rebuild.
Establish Network Connection
Active network required.
Connect your machine to a stable wired Ethernet connection or select an available Wi-Fi network to pull the installation files directly from Windows Update.
Confirm Target Image & Options
Review details before proceeding.
Verify the target Windows build, edition, and system language. Select your preferred wipe preference (standard file removal or full data sanitization) and acknowledge the data loss warning to launch the process.
Note: If you don't see this option yet, make sure to go to Windows Update and check for updates. Don't forget to toggle on the option "Get the latest updates as soon as they're available."