Check out Windows 10’s Free Upgrade Offer Is Over: What Now?

Windows 10's Free Upgrade Offer Is Over: What Now?

 

Both Windows 7 and Windows 8.1 are still supported by Microsoft with security updates, and will be for years to come.

Windows 7 will be supported with security updates until January 14, 2020, while Windows 8.1 will receive security updates until January 10, 2023. You can always find these support dates on Microsoft's Windows lifecycle fact sheet web page.

So, if you're still using Windows 7 or 8.1 on your PC, that's fine. They're still officially supported, and Windows 7 in particular is widely used in businesses. Leave Windows Update enabled and you'll keep getting security updates until 2020 or 2023.