OEM vs Retail vs Digital License: What's the Difference?

Quick answer: An OEM license is made for PC builders and manufacturers and stays tied to the first computer it activates. A retail license is the full boxed or Microsoft Store license, and under Microsoft's terms you can move it to another PC. A digital license isn't a separate thing you buy: it's how Windows records your activation against your hardware and, optionally, your Microsoft account.

All three install the same Windows with the same features. The difference is what the license is tied to and what happens after a reinstall or a hardware change.

What Does OEM Mean?

OEM stands for Original Equipment Manufacturer, the company that builds the hardware. In software, an OEM license is the license meant to ship with a computer. When you buy a laptop with Windows preinstalled, it's almost always activated with an OEM license.

OEM vs Retail vs Digital License at a Glance

Feature	OEM	Retail	Digital license
Tied to	The first PC it activates	You, on one PC at a time	Your hardware ID and optionally your Microsoft account
Move to a new PC	Not allowed under Microsoft's terms	Allowed under Microsoft's terms	Depends on where the license came from
Reinstall on the same PC	Reactivates automatically	Reactivates automatically	Reactivates automatically
Motherboard replacement	Usually needs a new license	Can be reactivated with the troubleshooter	Can move if linked to your account and retail
Price	Lower	Higher	Same as the underlying license

What Is an OEM Key?

Microsoft gives OEM licenses to PC manufacturers and system builders. On a prebuilt PC, the product key is usually embedded in the motherboard firmware (BIOS or UEFI), so Windows activates by itself after a clean install without asking for a key.

Pros: cheaper than retail, and you can reinstall Windows on the same PC as often as you like.

Cons: under Microsoft's terms it can't move to a new computer, and replacing the motherboard usually means you need a new license.

What Is a Retail License?

A retail license is the full license sold in a box or in the Microsoft Store. It's licensed to you rather than to a specific PC. Under Microsoft's terms you can remove it from your old computer and use it on a new one, as long as it's active on only one PC at a time.

Pros: you can take it with you when you replace your PC, and after a motherboard swap the Activation troubleshooter can usually reactivate it.

Cons: it costs more than OEM, and some sellers sell retail keys for a single activation, so read the terms before you buy.

At aktivasyon.com: a retail key is good for a single activation, so enter it after Windows setup and your drivers are finished. An OEM key reactivates whenever you reinstall Windows on the same PC.

What Is a Windows Digital License?

A digital license (Microsoft used to call it a "digital entitlement") arrived with Windows 10. Once Windows is activated, Microsoft stores your PC's hardware ID together with the license. On later installs you don't need a product key: Windows activates on its own once it's online.

If you link the digital license to your Microsoft account, you can move it to new hardware after a major change such as a new motherboard, using Settings > System > Activation > Troubleshoot. This works when the license is retail. A digital license that came from an OEM key usually won't move to a new motherboard.

Open Settings > System > Activation to check the link. If it says "Windows is activated with a digital license linked to your Microsoft account", you're set.

How to Check Whether Your Windows License Is OEM or Retail

1. Right-click Start and open Terminal (Admin).

2. Run:

   slmgr /dli
   

3. Read the Description line in the window that opens:

What the description says	License type
RETAIL channel	Retail
OEM_DM channel	OEM key embedded in the motherboard by the maker
OEM_COA_NSLP channel	System builder OEM license
VOLUME_MAK or KMSCLIENT	Business volume license (not meant for home users)

To see whether your motherboard has an embedded OEM key, run this in PowerShell:

(Get-CimInstance -Query 'select * from SoftwareLicensingService').OA3xOriginalProductKey

If it returns a key, your PC shipped with an OEM license.

What About Microsoft Office?

Office works the same way. Office Home and Home & Business bought retail are linked to your Microsoft account and move with it to a new PC. Office that came preinstalled stays with that PC, and Professional Plus keys are usually activated on a single computer. See our guide on how to activate Microsoft Office for the details.

OEM or Retail: Which Should You Buy?

Your situation	Our pick
I'll keep this PC for years and reinstall Windows now and then	OEM: it reactivates on the same PC after every reinstall
I plan to replace my PC or motherboard in a few years	Retail
I run Windows 11 Home and need Pro features	Home to Pro Upgrade
Home, school and gaming	Windows 11 Home
Work, remote access, BitLocker	Windows 11 Pro

Not sure which edition you need? Read Windows 11 Home vs Pro. Once you have a key, follow our guide on how to activate Windows 11.

What to Check Before You Buy a Key

• The license type is stated. A seller should say whether a key is OEM or retail on the product page.
• No "lifetime license for all your devices". Windows Home and Pro licenses cover one PC.
• No volume keys for home use. MAK and other volume keys are for businesses and can be blocked when they're resold to individuals.
• Clear refund terms. You should know what happens if a key doesn't work before you pay.