Hello,
You need a product key for Windows 11 Pro to activate the system.
If you have a Windows 11 Pro product key,
Select Start > Settings > System > Activation.
Select Change product key, and then enter the 25-character Windows 11 Pro product key.
Select Next to start upgrading to Windows 11 Pro.
If you don't have a Windows 11 Pro product key
- Select Start > Settings > System > Activation.
- Under "Upgrade your version of Windows," select "Open store".
- Make sure you're signed in with your Microsoft account to purchase Windows 11 Pro.
- Once your purchase is confirmed, you will be prompted to install Windows 11 Pro and restart your PC. You will then be running Windows 11 Pro.
More details you can refer to this link:
After upgrading to Win11 Pro, you can upgrade Win11 Pro to Win11 Enterprise with Microsoft 365 E5 license.
Best Regards,
Hania Lian
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