A Windows 10 Professional OEM key is the most cost-effective way to activate Windows 10 Pro on a single computer. It unlocks the complete Pro edition, including BitLocker, Remote Desktop and Hyper-V, and is ideal for new PC builds, refurbished machines and fresh installations. Order from Mcdkeys and receive your key by email, ready to activate.
What Is a Windows 10 Pro OEM Key?
OEM stands for Original Equipment Manufacturer. An OEM licence is the type of Windows licence used by system builders when they prepare a new computer. It delivers exactly the same Windows 10 Pro features and updates as any other licence type, with one difference: once activated, the key is permanently linked to that PC's motherboard and cannot be moved to another computer.
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Product: Microsoft Windows 10 Professional OEM product key
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Licence: one-time purchase for 1 PC, no subscription
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Binding: locked to the first device it activates
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Delivery: digital key sent by email
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Architecture: 32-bit and 64-bit
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Language: multilingual
OEM vs Retail Windows 10 Pro Licence
|
OEM key |
Retail key |
| Windows 10 Pro features |
Full |
Full |
| Number of PCs |
1 |
1 |
| Transfer to a new PC |
No, tied to the motherboard |
Yes |
| Reinstall on the same PC |
Yes |
Yes |
| Best for |
New builds and PCs you plan to keep |
Users who change hardware often |
Prefer a different licence? See our Windows 10 Professional retail key or the Windows 10 Home product key.
Windows 10 Pro Features Included
Data protection
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BitLocker: full-drive encryption for internal and removable storage.
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Microsoft Defender Antivirus: built-in protection against malware and ransomware.
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Windows Hello: face, fingerprint or PIN sign-in on supported hardware.
Professional tools
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Remote Desktop: access your PC from anywhere.
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Hyper-V: run virtual machines on your own hardware.
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Group Policy and Domain Join: manage devices and connect to business networks.
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Windows Sandbox: test unknown software in a safe, temporary environment.
Performance
- Support for up to 2 TB of RAM and two physical processors.
- DirectX 12 and Game Mode for demanding apps and games.
Who Should Buy an OEM Key?
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PC builders activating a newly assembled desktop.
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Refurbishers and repair shops preparing machines for resale.
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Home and office users doing a clean install on a PC they intend to keep.
System Requirements
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Processor: 1 GHz or faster processor or System on a Chip (SoC)
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Memory: 1 GB RAM (32-bit) or 2 GB RAM (64-bit)
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Storage: 32 GB or larger hard drive or SSD
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Graphics: DirectX 9 or later with WDDM 1.0 driver
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Display: 800 x 600 resolution or higher
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Internet: required for activation and updates
How to Activate Your Windows 10 Pro OEM Key
During a clean installation
- Download the Windows 10 installation media from Microsoft's official website and create a bootable USB drive.
- Boot the PC from the USB drive and select Windows 10 Pro as the edition.
- Enter your 25-character OEM key when setup asks for it.
- Finish setup and connect to the internet. Windows activates automatically.
After Windows 10 Pro is installed
- Open Settings, then Update & Security, then Activation.
- Select Change product key and enter the key from your order email.
- Select Activate.
Windows 10 Support Status
Microsoft ended standard support for Windows 10 on 14 October 2025. An OEM key still activates and runs Windows 10 Pro, and Microsoft offers a separate Extended Security Updates (ESU) programme for PCs that need security patches beyond that date.
Windows 10 Pro OEM Key FAQ
Is an OEM key a full version of Windows 10 Pro?
Yes. You get the same features, performance and Windows updates as any other Windows 10 Pro licence.
Can I move an OEM key to another computer?
No. An OEM licence is tied to the motherboard of the first PC it activates. If you expect to change PCs, choose our Windows 10 Professional retail key instead.
Can I reinstall Windows on the same PC?
Yes. You can reinstall Windows 10 Pro on the same hardware and it will reactivate.
What happens if I replace my motherboard?
Windows treats a new motherboard as a new PC, so the OEM licence will normally no longer activate and a new key is needed.
Does the key work for 32-bit and 64-bit?
Yes. It activates either version of Windows 10 Pro.
How will I receive my key?
By email after payment is confirmed. Check your spam folder if it does not arrive, or contact support@mcdkeys.com with your order number.
What if my key does not activate?
Contact our support team by email or live chat and we will help. Our Refund Policy explains your options in full.
Compare Other Windows 10 Licences
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