If your Windows 10 upgrade has not started yet or you want to install from different media so you don’t have to wait for the download on each system you are upgrading, you can use the Windows Media Creation Tool to either manually start the upgrade, or download the installer to a USB drive or ISO file. To get the free upgrade, you will need to preform the upgrade via the media creation tool directly or run the install media from an existing Windows 7, 8 or 8.1 install (vs. doing a boot clean install from the ISO or USB drive) so the installer can use your existing Windows 7, 8, 8.1 product key to grant the free upgrade.

Get the Windows 10 Media Creation Tool

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