Overview
- Microsoft began testing Cloud Rebuild in the Windows Insider Experimental channel on Tuesday, July 7, 2026, making the feature available in Build 26300.8772 for hands‑on validation.
- Cloud Rebuild downloads a full Windows image plus device drivers from Windows Update and reinstalls them while running from WinRE, so a repaired PC can boot and function without a USB recovery drive.
- The process is destructive by design: it reformats storage and deletes apps and user files, and users must confirm a clear data‑loss warning before the rebuild proceeds.
- Microsoft positions Cloud Rebuild as an admin‑focused tool within its Windows Resiliency Initiative alongside Point‑in‑Time Restore and Quick Machine Recovery to speed device recovery workflows.
- For IT teams this could cut repair time and remove dependence on physical media, but broader availability has not yet arrived and home users should not expect data preservation when the feature reaches general release.