Upgrade to Windows 11 after a system install that reinstalled Windows 10

Hi, good day!

I recommend using the Windows 11 Installation assistant to upgrade to Windows 11 manually. Performing this will upgrade your device to Windows 11 while your personal files, settings and installed applications will not be removed.

https://www.microsoft.com/software-download/windows11

Note: It's always a good practice to backup your important files first before performing any Windows upgrade or reinstallation.

Few things to check on the PC

• Unplug all external peripherals except for the Mouse, Keyboard, and LAN cable before starting
• Disable or uninstall any third-party Antivirus program to prevent it from interfering with the upgrade

I look forward to your update and am happy to continue working with you until the issue is resolved. If you find the answer helpful, please click "Accept Answer" and consider upvoting it. Otherwise, please keep me posted by clicking "Add comment" below instead of selecting Yes or No.

To get the free upgrade to Windows 11 again after reinstalling Windows 10, follow these steps:

1. Confirm eligibility and requirements
   • The free upgrade from Windows 10 to Windows 11 is still available if the device meets the Windows 11 minimum system requirements and is running Windows 10.
   • Check the requirements at Find Windows 11 specs, features, and computer requirements.
   • Optionally, download and run the PC Health Check app from the Windows 11 page to verify that the device is eligible.
2. Use Windows Update (recommended)
   • In Windows 10, go to Start > Settings > Update & Security > Windows Update.
   • Select Check for updates.
   • If the device is eligible and validated, Windows Update will show an option such as Upgrade to Windows 11 with a Download and install button. Use this to perform the free in-place upgrade.
3. If the Windows 11 offer does not appear
   • Make sure Windows 10 is fully updated (install all pending updates, then check again).
   • Ensure the device meets all Windows 11 requirements (including TPM, Secure Boot, CPU, RAM, and storage) using PC Health Check.
   • If the PC is managed by an organization/IT admin, upgrade availability may be controlled by policy; in that case, contact the administrator.
4. Alternative paths if Windows Update still does not offer Windows 11
   • If the PC meets the requirements but still does not show the upgrade, use one of the standard upgrade paths described for Windows 10 → Windows 11:
     • Windows 11 Installation Assistant (for an in-place upgrade while keeping files and apps), or
     • Windows 11 ISO / USB installation started from within Windows 10, choosing Keep personal files and apps during setup.
   • These methods still use the existing Windows 10 digital entitlement; no new product key is required when reinstalling or upgrading on the same device that previously ran an activated Windows 10 and Windows 11.
5. If the PC no longer meets requirements or is on an unsupported Windows version
   • If the device does not meet Windows 11 requirements, the recommended option is a new PC with Windows 11 preinstalled.
   • For unsupported Windows versions (not your case if you’re on Windows 10), there is no free upgrade path; the free path applies only from supported Windows 10 to Windows 11.

References:

• Upgrade to Windows 11: FAQ
• Making the transition to a new era of computing
• What does it mean if Windows isn't supported?
• Windows 10 upgrade to Windows 11 considerations

I noticed you reported my answer that the issue was not resolved, and I want to make sure I answered your question completely and accurately.

Please give me more details on what happened.

1. Is the Windows 11 update assistant not working?
2. Is there any error?