Windows 10 upgrade is still free if you have a valid Windows 7 or 8.1 product key
People who still want to get Windows 10 for free can take advantage of a loophole that allows users to get the OS if they already have a valid product key for Windows 7 or 8.1.
Officially, Microsoft's free one-year offer to let Windows 7 or 8.1 PCs get a free Windows 10 upgrade expired on July 29. However, ZDNet reports that many users have installed the OS simply by providing their older keys for Windows 7 or 8.1.
The report states:
ZDNet's Mary Jo Foley got a statement from Microsoft on this loophole:
So far, there's no word on when, or even if, Microsoft will close this loophole.
Meanwhile, it appears that Microsoft's other free Windows 10 offer, which is only supposed to be for people who use assistive technologies on their PC, could also be a while to get around the expired offer. The download client does not check to see if your older PC uses that kind of software. We asked Microsoft about this and got this statement from a spokesperson:
In other words, while Microsoft isn't checking to see if this offer is in fact being used by the right audience, they also don't want it used by everyone else who still wants to upgrade. There's no word yet on when Microsoft might end this offer.
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The bottom line is that there are still ways to get the Windows 10 upgrade for free, but they could end at any time. So if you hesitated to join in before the official offer expired, you might not have much time before these avenues are also closed off.