Can I upgrade

[AffordableNK]

I just installed Windows 7 today and I was wondering if I can use the Windows 10 Installation Media to do a free upgrade?

 

[dudeman509]

Nope. The free upgrade period has expired. You'd need a new W10 license key to upgrade.

 

[Multipack]

There is an exception https://www.microsoft.com/en-gb/accessibility/windows10upgrade

 

[MeanMachine41]

There is an exception https://www.microsoft.com/en-gb/accessibility/windows10upgrade

Yes this works.
http://www.zdnet.com/article/what-happens-free-windows-10-upgrades-after-july-29-2016/