Microsoft Windows 10 Professional OEM Key
- Key delivered by email right after payment
- Download link and activation guide included
- Secure checkout · digital product, nothing shipped
Windows 10 Pro is the business edition of Windows 10. It has everything in Windows 10 Home, plus BitLocker drive encryption, Remote Desktop hosting, Hyper-V virtual machines and the option to join a company domain. This OEM licence activates one PC and stays tied to the first computer you activate it on. You get the key by email after payment, with a download link and activation instructions.
- Activates 1 PC with a genuine 25-character Windows 10 Pro product key
- OEM licence: tied to the first PC it is activated on
- Supports all display languages; 32-bit and 64-bit versions
- Windows 10 support ended on 14 October 2025 (details below)
- Digital delivery: nothing is shipped
What does Windows 10 Pro add over Windows 10 Home?
Pro adds tools for security, remote work and IT management that Home doesn't have. If you only browse, stream and use Office, Home is usually enough. If you store client files, work remotely or run virtual machines, Pro is the edition built for that.
| Feature | Windows 10 Home | Windows 10 Pro |
|---|---|---|
| BitLocker drive encryption | No (device encryption only on some PCs) | Yes |
| Remote Desktop host (connect to this PC) | No | Yes |
| Hyper-V virtual machines | No | Yes |
| Windows Sandbox | No | Yes |
| Group Policy editor | No | Yes |
| Join a domain or Microsoft Entra ID (Azure AD) | No | Yes |
Why BitLocker matters on a laptop
BitLocker encrypts the whole drive, so a lost or stolen laptop doesn't hand over your files. Without the recovery key, the data can't be read even if the drive is taken out and put in another computer. Before you turn it on, save the recovery key to your Microsoft account or print it.
What does OEM mean for a Windows 10 Pro key?
OEM means the licence is meant for one specific PC. Once activated, it stays tied to that computer's hardware and, as a general rule, can't be moved to another PC. Features and updates are exactly the same as in the Retail version.
| OEM | Retail | |
|---|---|---|
| Windows features and updates | Identical | Identical |
| PCs covered | 1 | 1 (one at a time) |
| Tied to the first PC's hardware | Yes | No |
| Move to a new PC | Generally not allowed | Yes, after removal from the old PC |
| After a motherboard replacement | Often treated as a new PC; reactivation may fail | Can usually be reactivated |
OEM is a good fit when you're building a new PC or installing Windows on a computer you plan to keep for years. If you replace or rebuild PCs often, a Retail licence gives you more flexibility.
Is Windows 10 still supported?
No. Microsoft ended support for Windows 10 Home and Pro on 14 October 2025. Windows 10 still installs, activates and runs, but it no longer receives regular security updates, feature updates or technical help from Microsoft.
Microsoft runs an Extended Security Updates (ESU) programme for Windows 10, version 22H2. Home and Pro users can enrol through Windows Update and keep getting security updates until 12 October 2027, and organisations can buy ESU for up to three years after end of support. See Microsoft's Windows 10 end of support page for the current terms.
Windows 10 still makes sense for PCs that can't run Windows 11, or for software that only supports Windows 10. For any PC that meets the Windows 11 requirements, a Windows 11 key is the better long-term choice.
What are the system requirements for Windows 10 Pro?
Windows 10 Pro runs on almost any PC from the last decade. Microsoft's minimum is a 1 GHz processor, 1 GB of RAM for 32-bit or 2 GB for 64-bit, and 32 GB of storage. Unlike Windows 11, it doesn't require TPM 2.0 or a recent processor, which makes it practical for older hardware.
| Component | Minimum requirement |
|---|---|
| Processor | 1 GHz or faster processor or SoC |
| Memory (RAM) | 1 GB (32-bit) or 2 GB (64-bit) |
| Storage | 32 GB or more |
| Graphics | DirectX 9 or later with WDDM 1.0 driver |
| Display | 800 × 600 |
| Internet | Needed for activation and updates |
See Microsoft's Windows 10 system requirements.
How do I activate Windows 10 Pro?
If Windows 10 is already installed, you enter the key in Settings. For a new PC or a fresh start, install Windows 10 first using Microsoft's official media from the download link in your email, then enter the key.
- Open Settings → Update & Security → Activation.
- Select Change product key.
- Enter the 25-character key from your order email and select Next.
- If you're upgrading from Home, let the PC restart. The upgrade usually takes a few minutes.
- Go back to Activation and check that it says Windows is activated.
A common issue we see is a key entered on the wrong edition. A Pro key won't activate Windows 10 Home directly. Use "Change product key" as above so Windows upgrades to Pro first.
Because an OEM key binds to the first PC it activates, enter it on the computer you intend to keep it on, not on a temporary or test machine.
Frequently asked questions
Can I move an OEM licence to a new PC?
As a general rule, no. An OEM licence stays tied to the first PC it's activated on and ends with that PC. If you expect to move Windows to new hardware later, a Retail licence is the better choice.
Is OEM Windows a different version from Retail?
No. OEM and Retail install from the same Microsoft media and have exactly the same features and updates. The only difference is the licence terms: how the key is tied to the hardware and whether you can transfer it.
What happens if I replace the motherboard?
Windows treats a new motherboard as a new PC, so an OEM licence will often not reactivate after the swap. Smaller changes, such as a new drive, RAM or graphics card, usually don't affect activation. If you're unsure, contact our support team with your order number first.
Will Windows 10 keep working after end of support?
Yes. Windows 10 keeps running and can still be activated with this key. What stops is regular security updates and support from Microsoft, so the PC becomes more exposed over time unless it is enrolled in Extended Security Updates.
Browse all Windows 10 keys, or get Windows and Office together in a Windows + Office bundle.
