The Windows 11 cloud rebuild tool lets you wipe a broken PC and reinstall Windows straight from Windows Update, with no USB stick and no second computer. Microsoft just added it to the Release Preview channel in build 26200.9807, so it is getting close to a wide rollout.
Here is what it does, how to start it, and what you lose when you hit the button.
Quick facts:
- It runs from the Windows Recovery Environment (WinRE) and reinstalls Windows 11 plus your device drivers over the internet.
- It erases local apps, accounts, settings, and files on the system drive.
- It arrived in the Release Preview channel on October 16, 2026, in KB5127936.
- Windows 11 only. Windows 10 PCs do not get it.
- Admins get remote rebuild and drive-sanitizing options too.
It is a big deal because a dead PC no longer needs a second working PC to fix it.
What the Windows 11 cloud rebuild actually does
Think of it as a factory reset that does not trust your current install. It reformats the system drive, downloads a fresh Windows 11 image and the right drivers for your hardware, then boots you into the first-run setup screen.
That is the key difference from a repair. Cloud rebuild does not fix anything in place. It starts over, which is why it works even when the existing install is too damaged to boot.
Microsoft first showed it as a preview in July. According to Windows Central, it was meant for testing at that stage, and Microsoft said it would change before general availability. The Release Preview build is the next step toward that.
How to start a cloud rebuild from WinRE
If Windows still boots, you can get to the tool in a few clicks. Back up first, then follow these steps:
- Open Settings, then System, then Recovery.
- Next to Advanced startup, choose Restart now.
- In the blue recovery screen, pick Troubleshoot, then Cloud rebuild.
- Connect to the internet when asked. Windows checks your edition, language, and build.
- Confirm the drive erase and choose Install.
Your PC may restart several times. Keep it plugged in and do not power it off midway.
Because it lives in WinRE, you can also reach it when Windows will not start at all. You just need the recovery environment to be healthy and a network connection it can use.
What you keep and what you lose
Cloud rebuild is a full wipe of the system drive. Anything not stored somewhere else is gone.
| Item | After a cloud rebuild |
|---|---|
| Installed apps | Erased. You reinstall them. |
| User accounts and settings | Erased. You set up Windows again. |
| Files on the system drive | Erased unless backed up elsewhere. |
| Files synced to OneDrive | Safe in the cloud. Restore after signing in. |
| Other drives | Untouched by default. |
Check that OneDrive shows a finished sync before you start. A file that is still uploading is a file you can lose.
One more catch: the rebuild pulls drivers from Windows Update. If your network or storage driver is not available there, the process cannot finish.
Cloud rebuild vs. a USB install vs. Reset this PC
You already have a few ways to reinstall Windows. This is how they compare:
| Method | Needs USB drive? | Needs a working Windows? | Drivers included? |
|---|---|---|---|
| Cloud rebuild | No | No, WinRE is enough | Yes, from Windows Update |
| USB install media | Yes, plus another PC to make it | No | Often installed later |
| Reset this PC | No | Usually yes | Depends on the option |
Windows Central notes that Microsoft calls cloud rebuild a separate workflow from the cloud download option in Reset this PC. Microsoft has not explained the internal difference yet, so treat the comparison above as a practical guide, not a technical one.
Drive sanitizing and remote rebuilds for IT admins
The feature is not only for home users. Recent builds added two tools aimed at managed fleets.
The first is a “Remove & sanitize files” option. As Windows Latest reports, it asks the storage hardware to securely erase data before the reinstall. Microsoft warns Windows cannot verify the erase on its own, so regulated organizations should still use the drive maker’s tool.
The second is remote control through the Recovery CSP. Admins can start a rebuild on managed devices and pick the build, edition, and language. The Release Preview notes also say the cloud rebuild can be managed through the Recovery CSP.
The same Release Preview build can turn on memory integrity for eligible PCs. If you want to know what that changes, read our guide to Windows 11 memory integrity. Planning your upgrade path? Our Windows 11 26H2 guide covers who gets what.
Frequently Asked Questions
Does Windows 11 cloud rebuild delete my files?
Yes, it wipes the system drive, including local files, apps, and settings. Files already synced to OneDrive can be restored after you sign in.
Do I need a USB drive to reinstall Windows 11 this way?
No. The tool downloads Windows and your drivers from Windows Update, so you only need an internet connection that works inside WinRE.
Is cloud rebuild available on Windows 10?
No. Microsoft lists it as a Windows 11 feature. If you are still on Windows 10, you need the old methods.
Is it safe to use on my main PC yet?
Microsoft called the earlier preview a testing feature, and the Release Preview rollout is gradual, so not every PC will see it yet. Back up first and avoid it on a work-critical machine until it ships widely.
My take: a useful safety net, not a first resort
If your PC is stuck in a boot loop, this is the easiest rescue Windows has offered so far. Having it built in, with no second PC and no USB stick, will save a lot of people an evening. Just remember it is a wipe, not a repair, so try Startup Repair and System Restore first, keep your files in OneDrive or another backup, and treat cloud rebuild as the last step before a clean slate.
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