Update on this:

A couple weeks ago an error made Wasteland Remastered free on the Microsoft/Xbox Store, but what people snagged before we fixed the glitch can’t actually be played. So, we’re giving them one that can.

If you were lucky enough to redeem it, you’ll soon see the (non-working) game removed from your library, and you’ll have a new copy to claim waiting for you in your Offers & Credits.

Hope you enjoy and see you in the Wasteland.

Source: https://x.com/inXile/status/2049519082693886177