Minecraft Nat type

On PlayStation, Nat Type 2 is essentially what you want. NAT 3 is... well bad. NAT 3 is your bad connection while NAT 1 or 2 tends to be your great/standard (moderate) connection. Info on that here: https://portforward.com/nat-types/

I'm not an expert on how the PS4 works but, I found this third party support article about changing your NAT type on the PlayStation you may want to take a look at. https://ps4dns.com/how-to-change-nat-type-ps4/

I would check NAT types. Sometimes if you both have strict or even moderate NAT types it can cause issues when one of you is the host.

If you can get the NAT types open, it solves a lot of issues like these. Another workaround is to use a game with a dedicated 3rd party host (which minecraft has in the form of Realms if the subscription is worth it to you)

Hello, this could possibly be because of two things, 1. you or your friends are running different versions of minecraft (due to being an Xbox insider or some other beta test program of Minecraft). Make sure you check your versions because it might not be
allowing you to join due to that. 2. You could be having issues with your NAT type. If your NAT type is closed and your friends is open there have been issues before allowing you to join in their games. Check online for suggestions on how to program your router
to allow a more open and favorable NAT type.

-Spy

What have you tried? Usually, opening your NAT involves some port forwarding from your router.

You will need to figure out how to access the settings of your router. Once you do, you will need to:

1. Set up a static IP for your Xbox One.

2.
Assign the proper ports to your Xbox One's static IP address.

Hope this helps!

UPnP may still be engaged. There are three conflicting settings in a router; UPnP, Port Forwards/Port Triggers and DMZ. Make sure to have only one of those set.