Windows 11 Pro OEM License

Buy a Windows 11 Pro OEM licence and put Microsoft's newest professional operating system on your computer for life, with a single payment. An OEM licence is permanently registered to your motherboard: even after a full format it reactivates automatically on the same machine. Karınca Lisans delivers your key invoiced and 100% genuine, usually within 1–90 minutes by e-mail.

What Is a Windows 11 Pro OEM Licence?

An OEM (Original Equipment Manufacturer) licence registers the operating system permanently to a single computer. The key pairs with your motherboard on first activation, so when you format or reinstall Windows on the same machine it reactivates automatically. There is no subscription, no yearly renewal, no extra fee — pay once and use it for the life of your device. If you are not sure which edition fits you, see our guide Windows 11 Pro vs Home: the key differences.

OEM, MAK and Retail Licences Compared

For Windows 11 Pro we offer several licence types including OEM (this product), MAK and Retail — and the catalogue keeps growing. All of them are 100% genuine; the difference is the usage scenario:

Feature	OEM (this product)	MAK	Retail
Device binding	Permanently tied to the motherboard	Not permanently tied to a device	Tied to the user
Moving to another PC	Not transferable	Not transferable	Transferable
After a format	Reactivates automatically	May need reactivation	Easily reactivated
Validity	Lifetime	Lifetime	Lifetime
Price	Mid-range	Most economical	Premium
Best for	Keeping one PC for many years	A fast, economical solution	Frequent hardware upgrades

We examined all the details in our guide OEM vs Retail licence differences.

Not sure which type to choose? Our most popular and budget-friendly option, the Windows 11 Pro Key, is the best place to start.

Windows 11 Pro Highlights

• BitLocker device encryption: encrypts your drive end to end so your data stays safe even if the device is lost.
• Remote Desktop (RDP) host: connect to your computer securely from other devices.
• Hyper-V virtualisation: build virtual machines and test environments on Windows.
• Group Policy and domain support: join corporate networks with central management.
• Windows Update for Business: defer and control updates on your own schedule.

System Requirements

• 1 GHz or faster 64-bit processor with 2+ cores
• 4 GB RAM, 64 GB storage
• TPM 2.0 and Secure Boot (UEFI) support
• DirectX 12 compatible graphics, 720p display

Why Karınca Lisans?

Karınca Lisans is a Türkiye-based digital licensing platform serving thousands of individual and corporate customers. All our Windows 11 licences are sourced through official channels, every sale is invoiced, and keys can be verified on Microsoft activation servers. Delivery is by e-mail, usually within 1–90 minutes, and our WhatsApp support line is there for any setup questions. Faulty keys are covered by our 6-month warranty. You can explore other licence options in the related products below.