Unable to ready up or join a game in Fortnite, any ideas? Playing on Xbox series s

Hello Devansh, this is Manuela. I'm an Independent Advisor and community user like you, ready to assist with this.
Not a Microsoft employee.

I would like to let you know that Fortnite only supports 1080p on the Xbox Series S. Only the Series X can play the game in 4K.
So when you use 4K in your Series S, the system is going to upscale the game resolution.

Yes,

Anyone one can be on any of the...

Xbox One,

Xbox One S,

Xbox One X,

Xbox Series S,

Xbox Series X,

and join party's and play the same game together, no matter who is playing on any of these consoles.

I'm also having this problem on my Xbox series s. It doesn't seem to be affecting any other game but fortnite for me.

Hello Alexis Lamothe,

Thank you for your contribution to the Microsoft community.

We totally understand that you want to play Fortnite on higher FPS and resolution. However. the Xbox Series S does not support 1440p resolution at 120fps for Fortnite. The maximum resolution supported by the Xbox Series S is 1080p at 120fps. However, you can still enjoy playing Fortnite on your Xbox Series S at 1080p and 120fps.

Hope I helped!

YanYannn
Microsoft Community Moderator

Hello thank you for your reply

We have you played with the same user on another game (F1) and it works fine but Fortnite will bring up this error message (cross platform is not supported for Xbox series s/x. If we try and play Xbox one to Xbox one it works fine

So if you send a game request from a Xbox one to someone that has an Xbox series s/x, it just says it’s unsupported