Windows 10

Windows 10 Pro is the version many older PCs still run well. Microsoft ended mainstream support for Windows 10 on 14 October 2025, which means no more regular feature or security updates for most users — so this category is best for machines that genuinely cannot run Windows 11, or for software and hardware that still depends on Windows 10. It sits within our full Windows license keys range.

• Genuine Windows 10 Pro product key
• One-time purchase for one PC
• Ideal for older hardware
• Upgrade path to Windows 11 where supported
• Activation guide included
• 10-day replacement guarantee

• Choose Windows 11 whenever the PC supports it (TPM 2.0, Secure Boot, a supported processor): Windows 11 Pro or Windows 11 Home. It is the supported, current version.
• Choose Windows 10 Pro if the hardware falls short of Windows 11, or you need to keep a specific application or driver environment unchanged: Windows 10 Pro License Key.

Check your PC first with our Windows system requirements guide, and compare editions in Windows editions explained.

• BitLocker drive encryption, Remote Desktop hosting, Hyper-V, Windows Sandbox and Group Policy.
• Domain join and Azure AD support for work PCs.
• A perpetual license for one PC, delivered by email delivery (usually within minutes, always within 24 hours of payment).
• our 10-day replacement guarantee and 24/7 help via support.

1. Go to Settings → Update & Security → Activation.
2. Choose Change product key and enter the key we emailed you.
3. Select Next / Activate while online.

The full walkthrough is in how to activate Windows, and common error codes are explained in Windows troubleshooting.

If the PC meets the requirements, upgrading to Windows 11 is free and keeps your files and apps — see Upgrade to Windows 11. For businesses running servers alongside desktops, our Windows Server licenses and Microsoft Office keys complete the setup.