The Two Main Types of Windows 10 Licenses
When purchasing Windows 10, you'll typically encounter two license types sold through legitimate channels: OEM (Original Equipment Manufacturer) and Retail. A third type — Volume licenses — is for businesses and organizations and isn't relevant to individual consumers.
Understanding the difference matters because it affects transferability, support, and long-term value.
What Is an OEM License?
An OEM license is the version of Windows that comes pre-installed on new PCs sold by manufacturers like Dell, HP, Lenovo, and Asus. It's also sold separately as a standalone "System Builder" license for people building their own PCs.
Key characteristics of OEM licenses:
- Tied to one device: The license is permanently linked to the first PC it's activated on — specifically, the motherboard.
- Non-transferable: You cannot move an OEM license to a new computer if you replace or upgrade the motherboard.
- Support: Technical support comes from the PC manufacturer (e.g., Dell or HP), not directly from Microsoft.
- Lower cost: OEM licenses are significantly cheaper than retail equivalents.
- No free upgrades across editions: An OEM Home license cannot be freely upgraded to Pro.
What Is a Retail License?
A Retail license is purchased directly from Microsoft, authorized retailers, or the Microsoft Store. It's intended for individual users who want flexibility.
Key characteristics of Retail licenses:
- Transferable: You can deactivate Windows on one PC and activate it on another — ideal if you upgrade computers regularly.
- Microsoft support: Full support directly from Microsoft is included.
- Higher cost: Retail licenses cost more upfront, but offer greater long-term flexibility.
- Linked to Microsoft account: Can be tied to your Microsoft account for easy re-activation.
Side-by-Side Comparison
| Feature | OEM License | Retail License |
|---|---|---|
| Price | Lower | Higher |
| Transferable to new PC | No | Yes |
| Support provider | PC manufacturer | Microsoft |
| Linked to hardware | Yes (motherboard) | No |
| Microsoft account link | Limited | Full support |
| Best for | Budget builds, new PCs | Enthusiasts, frequent upgraders |
What About "Volume" Licenses?
Volume licenses are purchased by businesses or educational institutions in bulk. They come with centralized management tools (like SCCM or Windows Autopilot) and are not available to individual consumers through normal retail channels. If someone is selling you a "volume license key" cheaply online, treat it with extreme caution — these keys are often improperly distributed and may be deactivated by Microsoft.
A Note on Third-Party Key Sellers
Many websites sell Windows 10 keys at very low prices — sometimes just a few dollars. These are almost never legitimate retail or OEM keys. They are frequently:
- Recycled or stolen OEM keys from bulk PC batches
- Volume license keys being resold improperly
- Keys from geographic regions with different pricing, violating Microsoft's terms
These keys may activate Windows initially but can be revoked by Microsoft at any time. For guaranteed legitimacy, purchase from Microsoft directly or authorized retailers like Amazon, Best Buy, or Newegg.
Which License Should You Buy?
- Buy OEM if you're building a new PC that won't need its motherboard changed, and you want the most affordable option.
- Buy Retail if you upgrade your hardware frequently, want Microsoft's direct support, or need portability across devices.
Either way, always purchase from official or well-known authorized channels to ensure your license remains valid.