Windows License Types Explained: Retail, OEM, Volume and Subscription

Two copies of Windows 11 Pro can look identical on screen yet be licensed in completely different ways. The license type decides whether you can move Windows to a new PC, who provides support and how activation works. This guide explains the main Windows license types in plain language so you can choose the right one.

Retail Licenses

A retail license is what you buy from the Microsoft Store or an authorized retailer, either as a digital download or a boxed product.

• Transfer: can be moved to another PC, as long as it is active on only one device at a time.
• Support: provided by Microsoft.
• Activation: online with a product key or a digital license linked to your Microsoft account.
• Best for: custom-built PCs and users who upgrade hardware often.

OEM Licenses

OEM (Original Equipment Manufacturer) licenses come preinstalled on new computers from brands such as Dell, HP, Lenovo or ASUS. System builder versions are also sold to small PC builders.

• Transfer: tied to the first device it is installed on; it cannot be moved to a new PC.
• Support: provided by the PC manufacturer or system builder, not Microsoft.
• Activation: usually automatic, using a key embedded in the PC’s firmware.
• Best for: buyers of new computers. It’s the most cost-effective option.

Volume Licenses

Volume licenses are purchased by organizations through Microsoft volume licensing programs. They are designed for managing many devices centrally.

• Activation methods: Key Management Service (KMS), Active Directory-Based Activation (ADBA) or a Multiple Activation Key (MAK).
• Upgrade rights: Windows client volume licenses are generally upgrade licenses that require a qualifying underlying license, such as an OEM Pro license on each device.
• Transfer: managed under the organization’s agreement.
• Best for: businesses, schools and government agencies.

Subscription Licenses

Windows can also be licensed per user through subscriptions such as Windows Enterprise E3 and E5 or included in Microsoft 365 E3/E5. Cloud PCs through Windows 365 are another subscription model.

• Activation: devices with an activated Pro license step up to Enterprise automatically when a licensed user signs in.
• Transfer: the license follows the user, not the device.
• Best for: organizations that want flexible, per-user licensing.

Education Licenses

Schools can license Windows Education editions through academic volume licensing programs, often at reduced prices. These licenses are for eligible institutions, staff and students only.

Upgrade Licenses

Some licenses only upgrade an existing edition rather than providing a full license on their own. The Windows 11 Pro upgrade purchased in the Microsoft Store, for example, requires an activated Windows 11 Home installation. Volume licenses for Windows client editions work similarly and expect a qualifying base license on each device. Always check whether a product is a full license or an upgrade before buying.

Comparison Table

How to Check Your License Type

Open Command Prompt and run slmgr /dli. The Description line shows the channel, for example RETAIL channel, OEM_DM channel or VOLUME_KMSCLIENT channel.

Frequently Asked Questions

Is an OEM license less “genuine” than retail?

No. Both are fully genuine. They differ only in transfer rights and who provides support.

Can I buy a volume license as an individual?

No. Volume licensing programs are for organizations, and volume keys resold to individuals are a common sign of grey-market sales.

Which license should I buy for a self-built PC?

A retail license is the most flexible, because you can move it to your next build.

Conclusion

Retail licenses offer flexibility, OEM licenses offer value with new hardware, volume licenses offer central control and subscriptions offer per-user flexibility. Choose based on how you buy hardware and how long you plan to keep it.