Windows 11 Pro – Product Key

What you get with Windows 11 Pro

One Windows 11 Pro key for one PC. Type it in Settings → System → Activation: a clean install activates, and a PC running Windows 11 Home switches to Pro with its files and apps intact. You get the key and Microsoft’s download link by e-mail, usually within minutes of payment, plus a PDF invoice. You pay once and nothing renews. Windows 11 Pro has been part of more than 6,000 Office Digital orders.

What Windows 11 Pro adds to Home

Pro runs the same desktop, apps and Windows Security as Home. The difference is a set of tools for protecting and managing the PC:

• BitLocker. Encrypts whole drives, and BitLocker To Go encrypts USB flash drives. Home only offers device encryption on supported hardware, and that never covers external drives.
• Remote Desktop host. Other computers can sign in to this PC with Remote Desktop. A Home PC can start a Remote Desktop session but can’t accept one.
• Hyper-V. Creates and runs virtual machines on the PC. It needs a 64-bit processor with SLAT and at least 4 GB of memory.
• Windows Sandbox. Opens an untrusted file or installer in a throwaway desktop; closing the window deletes everything inside it.
• Domain and Microsoft Entra join. Lets the PC join a company Active Directory domain or Microsoft Entra ID, which Microsoft doesn’t allow for Home editions.
• Local Group Policy Editor. Sets rules such as password length or blocked USB storage with gpedit.msc, which Home doesn’t include.

Pro, Home or five PCs at once

Pick Pro when one of the tools above matters to you, for example a laptop with client files that should be encrypted, or an office PC you reach from home over Remote Desktop. A PC that only needs Windows itself runs fine on a Windows 11 Home key, and Home can be raised to Pro afterwards by entering a Pro key. For a small office, the Windows 11 Pro 5PC license covers five computers in one order.

How to activate your Windows 11 Pro key

1. For a clean install, download Windows 11 with the Media Creation Tool from the Microsoft link in your e-mail, boot from the USB drive, and either type the key when setup asks for it or skip that screen and pick Windows 11 Pro.
2. On a PC that already runs Windows 11 Home or Pro, skip the download and sign in with an administrator account.
3. Open Start → Settings → System → Activation.
4. Next to Change product key, select Change and confirm the User Account Control prompt.
5. Type the 25-character key and select Next. A Home PC then switches to Pro. If Windows shows error 0xc004f050 instead, change the edition first with Microsoft’s generic upgrade key, as our Windows 11 guide below describes, then enter your own key.
6. Back on the Activation page, select Add an account and log in to your Microsoft account, so the license is tied to it.

Screenshots, the USB steps and fixes for common error codes are in our step-by-step guide to installing and activating Windows 11.

System requirements

Questions about Windows 11 Pro

Will this key upgrade my Windows 11 Home laptop?

Yes. Enter it under Change product key on the Home laptop and Windows switches the edition to Pro. You don’t reinstall anything, and your documents and programs stay where they are. If error 0xc004f050 appears, do the edition switch from our Windows 11 guide first, then enter this key again.

My PC came with Windows 10. Can it run Windows 11 Pro?

Only if it meets the table above; TPM 2.0, Secure Boot and the processor list are the usual blockers. Microsoft’s PC Health Check app shows the result for your PC and names the part that fails.

What if I replace the motherboard later?

A motherboard swap can deactivate Windows. If the license is tied to your Microsoft account, open Settings → System → Activation → Troubleshoot, choose “I changed hardware on this device recently” and sign in to reactivate. If that fails, our support team helps on live chat or by e-mail, day and night.