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What's the difference between Windows 10 OEM and retail licence keys?

Martyn Casserly | Oct. 26, 2017
Can you get away with buying a cheap copy of Windows 10? OEM versions are listed online at a fraction of the price of retail licences, so what's the difference?

Shop around online and it won't be long before you come across cheap versions of Windows 10 on sale. Some of these will no doubt be of a dubious nature, while others seem legitimate. So, what are these odd-sounding versions such as OEM, and should you buy one for your PC? We break it down.

 

What is an OEM licence?

OEM stands for Original Equipment Manufacturer and is a term applied to companies that build PCs. These devices usually include a copy of Windows, so that when you walk out of the store with that shiny new Dell you can take it home and use it immediately.

These versions of Windows are more often than not OEM copies, in that they have been sold to the manufacturer at a discount so they can be put on their PCs.

While the majority of OEM versions end up preinstalled on PCs, it's also possible to buy them as licence keys from places like eBay or Kinguin. This is a common practice for users who like to build their own gaming PCs, or buy a second-hand device that has either no OS, or one that is out of date.

 

How is an OEM licence different to a retail version of Windows?

Most people never buy a copy of Windows itself. They buy a PC that has Windows on it, and that's the last they think of it.

But those who do want to purchase the operating system often opt to pick up a retail version. These are either sold in standard software packaging in shops, and thus called boxed copies, or are available online from Microsoft as a download and licence key.

In use, there is no difference at all between OEM or retail versions. Both are full versions of the operating system, and as such include all the features, updates, and functionality that you would expect from Windows.

Where their paths diverge is in two important areas: support and flexibility.

When you buy an OEM copy you're in essence taking on the role of the manufacturer of your device. This means that if you run into problems with hardware compatibility or encounter activation issues, calling Microsoft for help will probably end up with you being told to contact the manufacturer of your device. Which, of course, in this case is you!

The second major difference is that whereas when you buy a retail copy of Windows you can use it on more than one machine, although not at the same time, an OEM version is locked to the hardware on which it was first activated.

 

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