If you have a full retail copy of Windows 10, you can transfer it as many times as you want.

From an OEM Windows 7, Windows 8, or 8.1 licenses upgrade, these are licenses that come preinstalled on a new computer from a manufacturer, and then your Windows 10 license maintains the OEM rights – cannot be transferred.

But under Microsoft’s rules, you are only entitled to a one-time transfer.

If you upgraded from a retail copy of Windows 7, Windows 8, or 8.1, the Windows 10 license carries the retail rights from which it was derived – can be transferred.

Contrary to these statements, Windows 10 free upgrade does have some restrictions. Microsoft describes the Windows 10 free upgrade as a full version, not a trial. Determine If Your Windows 10 License Can Be Transferred Find out what type of license you have installed

Microsoft continues to provide Windows 10 as a full retail product for computers without a qualifying license or for people who build PCs. In 2015, Microsoft launched its latest version, Windows 10, offering the operating system to qualifying PCs and devices running Windows 7 or Windows 8 for free, for a limited time.

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