An unbootable laptop has traditionally meant one of two things for a UK business: a USB recovery drive that somebody must physically deliver, or a device couriered back to IT for reimaging. Microsoft’s new Cloud Rebuild preview is designed to remove both, and it has direct implications for any organisation managing devices through Microsoft Endpoint Manager.
Key Takeaways
- Windows 11 Cloud Rebuild: This is a new recovery process in preview mode that performs a complete OS reinstallation via Windows Update, even if you can’t boot into Windows.
- Build availability: shipped on 6 July 2026 in Windows 11 Insider Experimental Preview Build 263008772, based on version 26H2. It is not yet generally available.
- Automated driver deployment: Unlike Reset This PC, Cloud Rebuild not only installs a Windows image from Windows Update but also downloads drivers for the computer from Windows Update, so there is no need for a USB or any customised image.
- Data impact: the process reformats the system disk and removes all local files, accounts, applications and settings. Cloud-stored data, such as OneDrive content, is unaffected.
What Is Windows 11 Cloud Rebuild and Why Does It Matter?
Windows 11 Cloud Rebuild is a recovery option, currently in preview, which reinstalls the entire operating system using files downloaded directly from Windows Update. It runs inside the Windows Recovery Environment (WinRE), so it functions even when the installed copy of Windows is too damaged to start, and it requires no USB media or custom image.
Microsoft first announced the capability at the Ignite event in November 2025 as part of the company’s Windows Resiliency initiative, which also includes Quick Machine Recovery and Point-in-Time Restore features. Among the three, Cloud Rebuild is the most extreme because it replaces the entire installation, unlike the other two.
The feature was released to testers on 6 July 2026 via Insider Experimental Preview Build 26300.8772, as documented in the Build 26300.8772 release notes. Microsoft first unveiled it at the Ignite conference in November 2025 as part of its Windows Resiliency initiative, which also encompasses Quick Machine Recovery and Point-in-Time Restore technologies. Cloud Rebuild is the most extreme of the three, as it recreates the system installation rather than restoring or fixing it.
How Does Cloud Rebuild Differ from Reset This PC?
Reset This PC depends on the health of the currently installed operating system and on drivers being sourced locally, which makes it unreliable on severely corrupted machines. Cloud Rebuild runs entirely from WinRE, downloads a fresh Windows image and the device’s drivers from Windows Update, and offers no choice to keep files: it is strictly a clean-slate recovery.
Reset this PC has offered a Cloud Download option since 2020, but it works best when Windows remains bootable and does not pull a new driver set. Cloud Rebuild removes the dependency on the failed installation altogether.
| Capability | Cloud Rebuild (Preview) | Reset this PC (Cloud Download) | USB recovery media |
| Works when Windows will not boot | Yes, runs entirely from WinRE | Limited; depends on OS or WinRE health | Yes |
| Requires USB media | No | No | Yes |
| Keep-my-files option | No, full wipe only | Yes | No (clean install) |
| Driver source | Downloaded from Windows Update | Local device | Manual, post-install |
| Remote initiation | Planned via Microsoft Intune in a later release | No | No |
| Availability | Insider preview only | Available | Available |
The absence of a keep-my-files path is deliberate: the feature assumes user data is protected by cloud synchronisation rather than local retention.
How Does the Cloud Rebuild Process Work Step by Step in WinRE?
The process starts in the Troubleshoot menu of the Windows Recovery Environment, where the user selects Cloud rebuild, connects to a network, reviews the target Windows build, edition, and language, and confirms a data-loss warning. Windows then prepares, downloads and installs the fresh image and drivers in phases, restarting the device one or more times.
WinRE launches automatically after repeated boot failures. On a working machine, it can be reached through Settings > System > Recovery > Advanced startup, or a local administrator can initiate the rebuild from an elevated command prompt. In the current preview, those are the only two entry points.
What Are the Prerequisites Before You Start?
A device must be running Windows 11 with a healthy Windows Recovery Environment, have a manufacturer-supplied network driver in WinRE, be able to reach the internet over Ethernet or a WPA-Personal Wi-Fi connection, and meet the Windows 11 minimum hardware requirements, including an enabled Trusted Platform Module (TPM). Verify WinRE status with reagentc /info.
Confirm each item before relying on the feature:
- WinRE health: run reagentc /info from an elevated command prompt. If WinRE is disabled, the rebuild cannot start.
- Network drivers in WinRE: the device manufacturer must have included a compatible networking driver in the recovery environment; without one, the device cannot reach Windows Update.
- Connection type: only wired Ethernet or WPA2-Personal Wi-Fi is supported inside WinRE at this stage. Enterprise (WPA2-Enterprise) wireless networks are not.
- Hardware compliance: the device must meet Windows 11 minimum requirements, with TPM enabled in firmware.
Because the rebuild reformats the system disk, backup posture is the real prerequisite. Organisations should confirm that their disaster recovery planning covers endpoint data before any device needs to be rebuilt, not after.
What Happens During the Download and Install Phases?
After the network connection completes, Cloud Rebuild contacts Windows Update to find the target build and download networking drivers. The user reviews the displayed Windows build, edition and language, accepts the data-loss warning, and the device then prepares, downloads and installs Windows in phases, restarting one or more times before booting into the out-of-box experience.
There are two things Microsoft explicitly says about preparing to rebuild Windows: keep the device always plugged in, and do not restart or shut down the device during the process. Disrupting the process will result in an unbootable device.
The full step-by-step instructions are available in the official Cloud rebuild documentation on Microsoft Learn.
How Does Automated Driver Deployment Work in Cloud Rebuild?
During a rebuild, Windows Update supplies both the operating system image and the drivers matched to the device’s hardware, injecting them as part of the installation. The machine therefore returns fully functional at first boot, without an administrator manually sourcing storage, network, or graphics drivers, and without keeping hardware-specific custom images.
Here lies the principle that distinguishes Cloud Rebuild from an ordinary clean installation. An ordinary ISO installation typically does not include Wi-Fi and graphics card drivers, but the Cloud Rebuild process handles this during the download phase.
It also creates another dependency. If the manufacturer has not released a driver for Windows Update, or the hardware does not meet the requirements for Windows 11 recovery, the process will fail with error code 0xc1900200. For fleets under mobile device management, this makes hardware standardisation and driver servicing pipelines directly relevant to recovery reliability, not just day-to-day stability.
What Happens After the Rebuild on Intune-Managed Devices?
The device boots into the Windows out-of-the-box experience. On Microsoft Entra-joined, Intune-managed devices registered with Windows Autopilot, it automatically reconnects to Microsoft Intune, which redeploys the assigned applications and policies. Windows Backup for Organisations restores user settings, and personal files become available through OneDrive once the user signs in.
For unmanaged devices, the user completes setup as they would on a new PC. The managed-device flow is where the business value is concentrated: Recovery and re-provisioning collapse into a single, automated sequence, provided the device identity is correctly configured in Microsoft Entra ID.
Two supporting changes strengthen this. Starting with Windows 11 version 26H2, the Windows settings backup policy is enabled by default on eligible Entra-joined and Entra hybrid-joined devices. Hence, settings restoration no longer requires an administrator to configure it in advance. And because locally stored data does not survive the rebuild, files synchronised to OneDrive for Business are effectively the user’s only route back to their documents.
One true disclaimer: Remote kick-off from Microsoft Intune is not available in this preview version. At present, either physical access to the machine or a local administrator account is needed to start the process. Microsoft has said that the remote kick-off feature will be included in a future version, at which point it will be possible to recover a remote user’s laptop.
Should UK SMEs Prepare for Cloud Rebuild Now?
Yes, prepare, but do not deploy. The feature is still preview-only, and Microsoft recommends testing on non-production devices. Yet, the prerequisites it depends on- healthy WinRE, TPM compliance, OneDrive adoption and settings backup- are all worth auditing now. Organisations that address those today will be ready when Cloud Rebuild reaches general availability.
Hybrid and distributed teams have the strongest case for adopting this strategy. If a remote worker’s computer no longer boots, the current solution typically entails shipping the hardware or keeping backup USB drives at all sites. Once remote initiation ships, which reduces it to a phone call, mains power, and an internet connection, a Windows 365 Cloud PC can keep the affected user working from any spare device while the physical machine rebuilds.
Troubleshooting in the preview centres on two error codes. Error 0x800704C6 indicates no network connection in WinRE; reconnect via Ethernet or a WPA2-Personal Wi-Fi network and rerun. Error 0xc1900200 indicates failed Windows 11 hardware requirements or a driver missing from Windows Update, most commonly a disabled TPM, checked in UEFI firmware (PTT or fTPM) or via tpm.msc. If a rebuild fails outright, collect logs from X:$Windows.~BT\Sources\Panther, X:\Windows\Logs\MoSetup and X:\Windows\Logs\Rebuild for a Feedback Hub report under Recovery> Cloud rebuild.
For businesses without in-house capacity to run WinRE audits, pilot Insider builds or validate backup posture, partnering with a provider of managed IT support is the practical route to being rebuild-ready before the feature matures.
What is Windows 11 Cloud Rebuild?
Windows 11 Cloud Rebuild is a preview recovery feature that restores a PC to a clean, known-good state by performing a full operating system reinstall. It downloads the Windows image and device drivers from Windows Update and runs inside the Windows Recovery Environment, so it works even when Windows will not boot.
How does Cloud Rebuild differ from Reset this PC?
Reset this PC depends on the health of the installed operating system, sources drivers locally, and offers a keep-my-files option. Cloud Rebuild runs entirely from WinRE, downloads both a fresh Windows image and the device’s drivers from Windows Update and performs a full wipe with no choice to keep files.
Does Cloud Rebuild delete my files?
Yes. Cloud Rebuild reformats the system disk and removes all locally stored files, user accounts, applications and settings. Data stored in cloud services is not affected, so documents synchronised to OneDrive become available again once the user signs back in after the rebuild completes and setup is finished.
What are the prerequisites for Cloud Rebuild?
The device must run Windows 11 with a healthy Windows Recovery Environment, confirmed with reagentc /info, and include a manufacturer-supplied network driver inside WinRE. It needs internet access over Ethernet or WPA2-Personal Wi-Fi, and it must meet Windows 11 minimum hardware requirements, including an enabled Trusted Platform Module.
Can Cloud Rebuild be triggered remotely through Microsoft Intune?
Not in the current preview. Cloud Rebuild can only be started from the WinRE menu by somebody with physical access to the device or from an elevated command prompt by a local administrator. Microsoft has said that remote initiation via an endpoint management solution such as Intune will be available in a later release.
What does error code 0x800704C6 mean?
The error code 0x800704C6 indicates no network connectivity to the machine, and the Cloud Rebuild feature requires an active internet connection. Connect via an active Ethernet cable or use a WPA2-Personal Wi-Fi network, then exit the error message and try the process again.
What does error code 0xc1900200 mean?
Error 0xc1900200 occurs when the computer does not meet the hardware specifications for Windows 11. The most common reason for this problem is an unenabled TPM. To confirm whether the TPM is enabled, check the UEFI firmware settings.
What happens after Cloud Rebuild finishes on an Intune-managed device?
The device boots into the Windows out-of-the-box experience. Entra-joined devices registered with Windows Autopilot reconnect to Microsoft Intune automatically; Intune redeploys the assigned applications and policies; Windows Backup for Organisations restores user settings; and the user’s files become available through OneDrive once they sign in.