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With Windows 10 Microsoft changed the whole activation process – in an attempt to simplify it and remove the whole DVD-key thing that is frankly getting too old in this age of instant-everything delivered by the Internet.
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There was a time when users had to write down their Activation keys just in case they lose it someday and need to reinstall Windows – as you can imagine, this was a headache, but it was how things went before Windows 10 showed up. Home › Windows › Windows 10 license key doesn't work? Try this
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