If you want to try out this glitch, you can run the admin bat or the non-admin bat or register the AppXManifest manually, there are some tutorials on YouTube.

YOU MUST HAVE ADMIN (or your admin must enable Developer Mode in Settings, Update & Security, Privacy & Security in Windows 11 [or I'm wrong]). If you run the admin bat as admin, it will enable Developer Mode for you.

If you run the non-admin bat without admin or with, you will have to enable Developer Mode for you.

To install another app, open the manifest with VS, Notepad++, ect. and edit <Identity Name="Microsoft.ForzaHorizon2" to <Identity Name="TheApp"

If you don't know it, you need to at least have the Microsoft Store link, here's a guide: 

https://learn.microsoft.com/en-us/mem/configmgr/protect/deploy-use/find-a-pfn-for-per-app-vpn/

Unfortunately, there's no update button on the apps if they're Xbox One only, so this is pointless. You can still use this to get apps you don't own, but you won't be able to open them unless you own it. Currently I'm using Windows Run with ms-windows-store://pdp/?productId=c33b7578f782. I think that if you opened the app with the Xbox app, you'd have an update button, but I'm not sure. You can use msgamingapp but I don't know how to open an app with that.


Credits to MaskNinja