Windows 11 Home, Pro and Enterprise license keys plus a Home to Pro upgrade key. Retail and OEM options for one PC.
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A Windows 11 license key lets you activate Microsoft's current operating system on your PC and use all of its features. This category carries genuine licenses for Windows 11 Home, Pro and Enterprise, along with an upgrade key that moves an installed Home system to Pro. Each key covers one PC, never expires and requires no subscription.
Windows 11 license prices vary with the edition and license type you choose. Home and Pro come in Retail and OEM versions, while Enterprise has a single option. The upgrade key is not a full license, since it only switches the edition.
Windows 11 Home is made for home, school and gaming PCs. It ships with Windows Hello, Microsoft Defender, Snap layouts and gaming features such as DirectX 12 Ultimate, Auto HDR and DirectStorage. Windows 11 Pro adds BitLocker encryption, incoming Remote Desktop, Hyper-V, Windows Sandbox and domain join. If you work from home, run virtual machines or connect to a company network, Pro is the edition to pick.
Windows 11 Enterprise builds on Pro with business security and management tools such as Credential Guard, AppLocker and BranchCache. It suits centrally managed networks and software that specifically calls for Enterprise. If your PC already runs Home, the upgrade key switches it to Pro without touching your files or apps, and you then need a separate Windows 11 Pro license key to activate Pro.
Before you buy a Windows 11 license, make sure your PC meets the system requirements. Windows 11 needs TPM 2.0, Secure Boot and a compatible 64-bit processor, and Microsoft's PC Health Check app runs this check quickly. Next, decide on the license type. An OEM key binds to the first PC it activates and works again after a reinstall on that same PC, while a Retail key is good for one activation.
If you reset your PC often, OEM is the easier choice. Also make sure the key matches the installed edition, since a Pro key works on a Pro installation and a Home key on a Home installation. Windows 11 keys also activate the matching Windows 10 edition, which gives you some flexibility if you want to hold off on upgrading for a while.
A genuine Windows 11 license keeps security updates coming and removes the personalization limits of an unactivated copy. Licenses are delivered digitally. If you are after an affordable option, the sensible move is an edition that matches how you actually use your PC. Home is often enough for personal use, Pro stands out for work and development, and Enterprise fits company networks. For other Windows options, browse the operating systems category, and see the Microsoft brand page for all Microsoft software.