PS4 and Switch Fortnite accounts lock each other out, players

Using a Fortnite account that has been used on the PlayStation 4 will keep you from using that account on the Switch, and an account that has been used on the Switch can’t be played on the PlayStation 4.

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Bluetooth Controller for Switch/PC/iPhone/Android

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Fortnite on the Switch Lacks PS4 Cross-Play Because Sony Is

In response to Fortnite accounts locked out of Switch, Sony says

Can you log in to the same Fortnite account on two separate

Fortnite: Can you use the same account on PC and PS4?

It's finally here! : r/FortNiteBR