Upgrade from a Prior Windows Version: Free If you need a product key and don’t have one available already from an existing build or copy, you’ll want to check out method 5, which involves using a low-cost key marketplace. Make sure you’re signed in with your Microsoft account to purchase Windows 10 ProĪfter you confirm your purchase, you’ll be prompted to install Windows 10 Pro and restart your PC. You’ll then be running Windows 10 Pro.Below, we’ll also show you the different methods for saving money on Windows and compare them. Under Upgrade your edition of Windows, select Go to the Store If you don't have a Windows 10 Pro product key Select Next to start the upgrade to Windows 10 Pro. Under Upgrade your edition of Windows, select Change product key.Įnter the 25-character Windows 10 Pro product key. Select Start > Settings > Update & Security > Activation.

Then, follow the steps that apply to your product key scenario. For more info, see Find your Windows product key. For more info, see Activate Windows.įirst, check if you have a Windows Pro product key. If you’re not activated, we recommend you activate Windows 10 Home first. Important: The following steps apply only to devices currently running an activated copy of Windows 10 Home. Make sure you’re signed in with your Microsoft account to purchase Windows 11 ProĪfter you confirm your purchase, you’ll be prompted to install Windows 11 Pro and restart your PC. You’ll then be running Windows 11 Pro. Under Upgrade your edition of Windows, select Open Store If you don't have a Windows 11 Pro product key Select Next to start the upgrade to Windows 11 Pro. Select Change product key, and then enter the 25-character Windows 11 Pro product key. Select Start > Settings > System > Activation. If you’re not activated, we recommend you activate Windows 11 Home first.

Important: The following steps apply only to devices currently running an activated copy of Windows 11 Home.

Windows 11 license