Tough luck if your PC can't support Windows 10 and you'd like to play Fortnite - you can't.

Epic Games launched Fortnite's "Mega" season on Friday, March 10. So far, fans are loving it. But, if you're a PC gamer, you might have found yourself locked out of Fortnite for "no reason".
As it turns out, Epic had already warned this would happen several months ahead.
As per Epic's blog post in December, Fortnite will drop support for both Windows 7 and Windows 8 as soon as Fortnite Chapter 4 Season 2 is out.
So, if you haven't upgraded yet, you can't play Fortnite straight from the launcher. Instead, Epic is recommending that you use Nvidia GeForce Now if you'd like to play Fortnite. Of course, Fortnite is running well on other platforms, including Android devices, the Nintendo Switch, the PS4, PS5, Xbox One, and the Xbox Series S/X as well as Xbox Cloud Gaming.
Fortnite's latest update is massive. On top of the usual collaborations and content drops, Epic has released the first-person mode for Fortnite. It's unclear if fans will gravitate toward it but it should spice up the gameplay like the no-build mode.
Fortnite is currently going on its sixth year on the market and it has shown no signs of slowing down.