The in-place upgrade comes with an ejector seat — but it is on a timer, and two innocent-looking clicks can remove it early. Here is how the rollback works and how to protect it.
Trying Windows 11 on an unsupported PC is a much calmer decision when you know you can leave. You can — for 10 days. This page explains the rollback Microsoft builds into the upgrade, the ways people accidentally throw it away in the first week, and the one command that stretches it to 60 days while there is still time.
An in-place upgrade keeps your previous Windows 10 installation in a folder called Windows.old and offers a formal way back: Settings → System → Recovery → Go back. Windows restores the old system as it was — apps, settings and files as they stood at upgrade time — and removes Windows 11. It is a restore, not a time machine: anything you installed or changed after the upgrade is left behind, so copy new files elsewhere before you roll back.
The rollback is offered for 10 days by default. After that, Windows deletes Windows.old to reclaim the space and the Go back button disappears. Two common accidents close the window early:
If you want longer to judge the upgrade, extend the window while it is still open — it cannot be revived after it closes. From an elevated Command Prompt:
DISM /Online /Set-OSUninstallWindow /Value:60
That sets the rollback period to 60 days, the maximum. To check how many days your PC currently has left:
DISM /Online /Get-OSUninstallWindow
Extending costs disk space — Windows.old sits on your drive for the whole period — and that is the correct price for two months of reversibility on an unsupported install.
Once the window is gone, there is no built-in road back. Your remaining options are the ones the backup guide prepared: restore the full disk image you took before upgrading, or clean-install Windows 10 again from scratch — remembering that Windows 10 is out of support, so going back is returning to the problem, not escaping it. Rollback is a tool for an upgrade that misbehaves, not a strategy for living between two systems.
See the one-click upgrade method demonstrated step by step on the Technical Anshu channel, then decide with the facts on this page.
▶️ Watch Full VideoGoing back restores Windows 10 as it was at the moment of upgrade. Files you created or changed while on Windows 11 are not carried back — copy anything new to an external drive or another folder location before you roll back, then bring it across afterwards.
Either the 10 days expired, or Windows.old was deleted early — Disk Cleanup and Storage Sense both offer to remove the previous installation, and deleting the folder by hand has the same effect. Once Windows.old is gone, only a pre-upgrade disk image can restore your old system.
No. The DISM command that extends the window only works while a rollback is still available. This is why the extension belongs in the first day or two after upgrading, while you are still deciding.