After 10 days, you cannot roll back to Windows 10 using the built-in option, so you must perform a clean reinstall of Windows 10 by first backing up your files to an external drive or cloud service, then creating a bootable Windows 10 USB installation drive using the Media Creation Tool on another PC, followed by booting from the USB on your Windows 11 device and performing a custom installation that deletes existing partitions, and finally reinstalling your apps and restoring your files, with the assurance that your Windows 10 digital license remains valid and activation occurs automatically.

If you’ve upgraded to Windows 11 and want to downgrade to Windows 10, you can only do so easily within 10 days of the upgrade. After that, the built-in rollback option is no longer available. Since you're asking about downgrading after 10 days, here’s what you need to know and your available options.

? Why the 10-Day Window Matters

When you upgrade from Windows 10 to Windows 11, Windows keeps your old system files for exactly 10 days. During this time, you can go to:

Settings > System > Recovery > Go back
(under "Go back to Windows 10")

This rolls back your system without losing files or most apps.

But after 10 days, this option disappears because the old Windows 10 system files (called the "Windows.old" folder) are automatically deleted during disk cleanup.

? What to Do After 10 Days

Since the rollback feature is gone, your only option is a clean reinstall of Windows 10. This means:

• You’ll need to back up your files manually.
• You’ll reinstall Windows 10 from scratch.
• You’ll reinstall your apps and restore your data afterward.

Don’t worry — your Windows 10 license is still valid (it’s tied to your hardware or Microsoft account), so you won’t need to buy anything.

? Steps to Downgrade to Windows 10 After 10 Days

1. Back up your files

   • Use an external drive or cloud storage (OneDrive, Google Drive, etc.).
   • Save documents, photos, downloads, desktop files, and any app data you want to keep.

2. Create a Windows 10 installation USB

   • On another PC, go to: http://ipnx.cn/link/6644fa94782af6fb1d0b7e7d09f19804
   • Download the Windows 10 Media Creation Tool.
   • Use it to create a bootable USB drive (you’ll need an 8GB USB stick).

3. Boot from the USB and install Windows 10

   • Plug the USB into your Windows 11 PC.
   • Restart and press the boot menu key (usually F12, F10, or ESC — depends on your PC brand).
   • Select the USB drive.
   • Follow the setup wizard.
   • When prompted, choose Custom Install and delete all existing partitions (or just the main Windows partition if you’re keeping data separate).

4. Reinstall apps and restore files

   • Once Windows 10 is installed, sign in and reinstall your apps (browser, Office, etc.).
   • Copy your backed-up files back to the PC.

?? Note: You may need to reinstall drivers (like graphics or Wi-Fi), though Windows 10 usually handles most automatically.

? Important Notes

• Activation: Windows 10 should activate automatically using your digital license (linked to your hardware).
• Data loss: A clean install will erase everything on the system drive (usually C:), so back up first.
• No easy rollback: There’s no “undo” after this — you’re starting fresh.

? Pro Tips

• If you’re unsure, try dual booting temporarily (install Windows 10 on a second drive or partition), but that’s more advanced.
• Consider using File History or a full disk image backup (via third-party tools like Macrium Reflect) before starting, just in case.

Basically, after 10 days, downgrading isn’t a one-click task — it’s a full reinstall. But as long as you back up your data and follow the steps, it’s totally doable and safe. Just don’t skip the backup.

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