When buying a Windows license, you’ll see two main types: OEM and Retail. They activate the same Windows, but the license terms differ. Here’s what actually changes.
OEM licenses: cost-effective, device-bound
An OEM (Original Equipment Manufacturer) license is intended to live on a single device. Once activated, it is linked to that machine’s hardware.
Because of this, OEM keys are the most affordable way to get a genuine, fully-updating copy of Windows for one computer that you do not plan to move the license off.
Retail licenses: transferable, flexible
A Retail license can be deactivated on one PC and moved to another, which makes it the better choice if you upgrade computers often.
This flexibility is why Retail typically costs more than OEM.
Which one should you choose?
If you are activating one PC and keeping that license on it, OEM gives you the best value. If you want to carry your license to future builds, choose Retail.
Either way, the key activates online through Microsoft’s activation servers and gives you the full version of Windows with updates.
Frequently Asked Questions
Does OEM Windows get updates?
Yes. OEM and Retail both receive the same Windows updates and security patches.
Can I move an OEM key to a new PC?
OEM licenses are intended to stay on the first device they activate. For transfers, a Retail license is the right choice.
Is one more ‘genuine’ than the other?
No — both are genuine Windows licenses. The difference is the transfer terms, not the software.
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