Best for: Activating one PC that already runs Windows 11 Pro — the lowest-priced way to a genuine, activated Pro.
MAK vs Retail — which one do you need?
- MAK (this key) — a volume license key for one PC. It activates Windows 11 Pro online. It can’t upgrade Windows Home to Pro, and it stays with the PC you activate it on.
- Retail — upgrades Home to Pro and can be moved to a new PC later. Choose the Windows 11 Pro Retail Online Key if you need either.
Before you buy:
Open Settings → System → Activation. The edition must say Windows 11 Pro. If it says Home, choose the Retail key instead.
What Pro adds:
- BitLocker — full-disk encryption to protect your data if your device is stolen
- Remote Desktop — access or share your PC remotely
- Domain and Azure AD join — for business and enterprise environments
- Hyper-V — run virtual machines locally
- Windows Sandbox — test software in an isolated environment
- Group Policy management


