Microsoft Windows License Keys

A Windows license key is the product key that turns an installed copy of Windows into a fully activated, genuine system. Every key in this category is a one-time purchase: there is no subscription, and the key stays valid for the life of the PC it is activated on. Browse by version — Windows 11 for any PC that meets its hardware baseline, or Windows 10 for older machines — then pick the edition that matches how you use the computer.

• Genuine Microsoft product keys
• One-time purchase, no subscription
• Windows 11 and Windows 10 editions
• Retail and OEM options explained clearly
• Email delivery with an activation guide
• 10-day replacement guarantee

Start with the version, then the edition. Check that your PC can run the version first; our guide to Windows system requirements lists exactly what each needs.

• Windows 11 Home covers everyday computing: browsing, study, streaming, light office work and gaming. See the Windows 11 Home License Key.
• Windows 11 Pro adds BitLocker drive encryption, Remote Desktop hosting, Hyper-V virtualisation, Group Policy and domain join — the usual choice for freelancers, small businesses and power users. See the Windows 11 Pro License Key.
• Windows 10 Pro suits older hardware that cannot run Windows 11. Microsoft ended mainstream support for Windows 10 on 14 October 2025, so plan to move to Windows 11 where the PC allows it — the upgrade to Windows 11 guide shows how. See the Windows 10 Pro License Key.

Not sure about Home versus Pro? Read Windows editions explained before you buy.

• A genuine, unused Microsoft product key — 25 characters in the familiar XXXXX-XXXXX-XXXXX-XXXXX-XXXXX format.
• A perpetual license for one PC: pay once, no yearly renewal.
• A short activation walkthrough with the key, plus our full guide on how to activate Windows.
• Free access to Windows updates and security patches while that version is supported by Microsoft.
• our 10-day replacement guarantee and 24/7 help from our support team if a key does not activate.

After payment your key arrives by email delivery (usually within minutes, always within 24 hours of payment). Then:

1. Install Windows from a USB drive or via Windows Update, or keep your current installation.
2. Open Settings → System → Activation → Change product key and enter the key.
3. Connect to the internet and select Activate. Windows confirms with Microsoft and shows Windows is activated.

Stuck on an error code? The Windows troubleshooting guide and our article on quick Windows 11 activation fixes cover the common ones. For a full walkthrough, read how to activate Windows 11, step by step.

A Retail license belongs to you and can be moved to a new PC if you replace your hardware. An OEM license is tied to the first motherboard it is activated on and is meant for a single machine. Both are genuine; Retail simply costs more for the freedom to transfer. The full comparison is in Retail vs OEM license. Each product page states which type the key is, along with its edition and language.

Building a team setup? Look at Office & Productivity for Microsoft Office, or Windows Server if you run your own servers.