Go to website https://support.microsoft.com/en-us/windows/upgrade-windows-home-to-windows-pro-ef34d520-e73f-3198-c525-d1a218cc2818 and choose one of two methods
Method 1: Upgrade through the Microsoft Store
- Open the Microsoft Store app.
- Navigate to the Windows upgrade page, or go to Settings > System > Activation and click Open Store under the "Upgrade your edition of Windows" section.
- Find and select the Windows 11 Pro upgrade.
- Click Buy and sign in with your Microsoft account to complete the purchase.
- Once the purchase is complete, you will be prompted to install the upgrade. Click Install and follow the instructions.
- Your PC will restart to complete the installation.
Method 2: Use a product key
- Go to Settings > System > Activation.
- Under "Upgrade your edition of Windows," select Change product key.
- Enter the 25-character Windows 11 Pro product key you have purchased separately.
- Click Next and then click Start to begin the upgrade.
- Your PC will prepare the upgrade and restart automatically.
- After restarting, you will be running Windows 11 Pro. You may need to connect to the internet to activate it, especially if you used a generic key to start the process.