Microsoft Windows 11 Pro – Product Key – Lifetime License for 1 PC (32/64-bit)

Windows 11 Pro key for 1 PC: the business edition, one-time purchase

A Windows 11 Pro key unlocks the edition of Windows that Microsoft builds for work. It runs the same desktop, apps and games as Home, then adds the tools that matter once a PC holds business data or joins a network: BitLocker encryption, Remote Desktop hosting, Hyper-V, Windows Sandbox, Group Policy and domain or Microsoft Entra ID join. This listing is for a single product key that activates one PC for the life of the installation.

Most Windows 11 Pro product key buyers fall into one of a few groups: a freelancer or small business owner setting up a work PC, an IT person rebuilding a machine whose OEM license died with the motherboard, a developer who needs Hyper-V for test environments, or a home user who wants to encrypt a laptop that travels. If your PC came with Windows 11 Home and is already activated, our Home to Pro upgrade key does the same job at the edition-upgrade level; if you are installing from scratch or replacing a lost license, this full Windows 11 Pro key is the one to buy.

What Windows 11 Pro adds over Home

• BitLocker drive encryption with recovery key management, so a stolen laptop does not become a data breach
• Remote Desktop host: connect to this PC from another Windows, Mac, iOS or Android device over the network
• Hyper-V: run Windows, Linux or older Windows versions in virtual machines on the same hardware
• Windows Sandbox: open an unknown file or installer in a disposable, isolated desktop that resets when closed
• Domain join and Microsoft Entra ID join for business sign-in, Group Policy and mobile device management
• Windows Update for Business controls, Assigned Access (kiosk mode) and Windows Information Protection
• Support for up to 2 TB of RAM and two physical processors, compared with 128 GB and one processor in Home
• Everything in Home: Windows Security, Windows Hello, Snap layouts, Auto HDR, DirectStorage and the Microsoft Store

Three ways buyers use this key

The first is a clean installation: you build or wipe a PC, boot from official Windows 11 media, pick Pro from the edition list and enter the key during Setup. The second is activating an existing installation: the PC already runs Windows 11 Pro but shows the Activate Windows watermark, often after a refurbished purchase or a motherboard replacement, and Change product key fixes it in a minute. The third is an edition change: the PC runs activated Windows 11 Home and you want Pro features, so you enter this key and Windows switches editions after one restart. All three paths end with the same perpetual Windows 11 Pro activation; the key does not care which route you took.

Windows 11 Pro vs Home vs Pro for Workstations

Pro sits in the middle of Microsoft's client lineup. Home is below it, and Pro for Workstations sits above it for server-grade desktops. The table shows where the lines are drawn so you do not overbuy or underbuy.

System requirements

The Windows 11 Pro requirements are the same as for every Windows 11 edition. Check them before you order, especially on PCs built before 2018.

• 1 GHz or faster 64-bit processor with two or more cores, on Microsoft's supported CPU list
• 4 GB RAM minimum (8 GB or more is a realistic minimum for Hyper-V use)
• 64 GB or larger storage device
• UEFI firmware with Secure Boot capability
• TPM 2.0, discrete or firmware based
• DirectX 12 compatible graphics with a WDDM 2.0 driver, 720p display larger than 9 inches
• Internet access for activation and updates; Hyper-V additionally needs a CPU with second-level address translation (SLAT)

Pro features worth turning on in the first hour

Once Pro is activated, a few settings pay for themselves immediately. Turn on BitLocker from Settings, Privacy and security, Device encryption, or from the drive's context menu, and save the recovery key to your Microsoft account or a printout; a lost laptop then holds nothing readable. Enable Remote Desktop under Settings, System, Remote Desktop if you ever work from another room or another city. Add Windows Sandbox and Hyper-V through Turn Windows features on or off if you test installers or run other operating systems. Open the Local Group Policy Editor (gpedit.msc) to control update timing and privacy defaults in one place. None of these are available on Home, and together they are the reason most of our customers pick the Pro key.

Licensing explained

The Windows 11 Pro key is a perpetual license: one payment, no renewal, valid for as long as the installation exists on the licensed PC. It is not part of Microsoft 365 and it is not a trial. One key activates one PC; a second PC needs a second key, or you can choose the Windows 11 Pro license key for 5 PCs if you are setting up several machines. Feature updates and monthly security updates arrive through Windows Update at no extra cost for as long as Microsoft supports Windows 11, and the license carries over to each new annual release of Windows 11 without any action on your part.

Transfer rights by license type

Retail keys can be removed from one PC and activated on another. OEM keys are bound to the first PC they activate. Volume (MAK) keys carry a fixed number of activations and are meant for organizations. We do not guess about which type you are getting: the license type for this product is shown in the Product Overview table on this page. If you plan to swap hardware often, read the type before you buy, or ask us before ordering.

Using the key on a Home installation

This key can be entered on a PC that currently runs Windows 11 Home. Go to Settings, System, Activation, choose Change product key, enter the 25 characters, and Windows switches the edition to Pro after a restart, keeping your files and programs. This is the same mechanism our dedicated upgrade product uses; the difference is that this full key can also be used for a clean install on a PC with no existing license.

Should I buy a Windows 10 Pro key instead

Customers sometimes ask whether a Windows 10 Pro key would do, since Windows 10 keys historically activated Windows 11. Two points matter. Windows 10 support ended on October 14, 2025, so new installs should target Windows 11 directly, and a key sold as a Windows 11 Pro product key is the clean, unambiguous match for Windows 11 Pro media. Second, the hardware rules differ: Windows 10 Pro still installs on PCs without TPM 2.0, which is why we keep a Windows 10 Pro key listed for older machines. If your PC passes the Windows 11 requirements, buy the key on this page and skip the detour.

Why buy a Windows 11 Pro key from Software in Store

We are Software in Store, an independent US reseller operated by MAKERS UNITY LLC in Sheridan, Wyoming. We sell genuine Microsoft product keys, delivered digitally, backed by a real support team. We are not Microsoft and we do not claim to be a Microsoft partner; we are a store that gets a working key into your inbox quickly and stands behind it.

• Email delivery within minutes of payment, seven days a week, including weekends and holidays
• The official Microsoft download link so you install clean, unmodified Windows 11 Pro media
• Phone activation handled for you: send us the Installation ID and we return the Confirmation ID
• 30-day money-back guarantee with replacement or full refund if a key cannot be activated
• Secure checkout by card, Apple Pay or Google Pay; card numbers never touch our servers

If something goes wrong after the sale, you write to the same address that answered your pre-sales question, and a person picks it up the same day.

Related products

Need Windows plus Office in one order? The Office 2024 Pro Plus and Windows 11 Pro bundle ships both keys in one email. Already running activated Windows 11 Home? The Windows 11 Home to Pro upgrade is the lighter option. Outfitting an office? See the 5 PC Windows 11 Pro license. For older hardware that fails the TPM 2.0 check, a Windows 10 Pro product key is still available. Every edition is listed in our Windows 11 category.

Order your Windows 11 Pro product key

Add the key to your cart, check out, and the email arrives within minutes. Our how it works page walks through delivery, activation and what to do if Windows asks questions. The FAQ covers transfer rules, refunds and activation errors, and the Download and Install tab on this page lists every step with exact menu paths. When you are ready, the button above gets a genuine Windows 11 Pro key working on your PC today.