If you purchased a Retail license of Windows 10 (opens in new tab), you are entitled to transfer the product key to another computer. If you plan to upgrade to Windows 10 from Windows 8.1 or Windows 7 with a retail copy, you can also move the product key to another device.
Can I use product key of one computer in another?
If it’s a retail Full or Upgrade license – yes. You can move it to a different computer as long as it’s only installed on one computer at a time (and if it’s a Windows 7 Upgrade version the new computer must have it’s own qualifying XP/Vista license).
Can I use the same Windows product key on multiple computers?
Windows product keys can only be activated on one computer at a time. That means you’ll have to deactivate one end in order to get another to work.
Can I use the same Windows 10 license on 2 computers?
You can only install it on one computer. If you need to upgrade an additional computer to Windows 10 Pro, you need an additional license. Click the $99 button to make your purchase (the price might vary by region or depending on the edition you are upgrading from or upgrading to).
How many computers can use one product key?
a. One Copy per Computer. You may install one copy of the software on one computer.