Upgrade using a Windows 10 Pro product key. Select the Start button, then select Settings > Update & Security > Activation. Select Change product key, and then enter the character Windows 10 Pro product key. Select Next to start the upgrade to Windows 10 Pro. Jul 29, · Microsoft New Zealand announced today that the Windows 10 operating system is now available in this country as a free upgrade 1 to eligible devices, or with new PCs and tablets. Described as the best and most secure Windows ever, Windows 10 is unlike any previous version as it is delivered as a service, and will be kept automatically up-to-date with innovations and security updates via online Estimated Reading Time: 8 mins.
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