Error code 0x87DD0018

Let's try to power cycle your console. Please hold down the power button on the front of the console for approximately 15 seconds until the power light shuts off. Wait about 60 seconds, then power it back on. Be sure you see the green "XBOX ONE" animation
loading screen when you power it back up.

Hi DanielVollaire,

I would recommend creating a new thread and explaining the issue you are experiencing a little better for us to assist you. What game is it you are trying to play offline? Even if its single player it could still require you to be online to play.

Hello There ! To resolve this problem, you and the friend whose party you're trying to join should use the Xbox One Multiplayer Game Solution.

If the issue persists, it may also This may mean that the Internet connection between your Xbox console and the other party members is failing. This often happens because of incompatible Network Address Translation (NAT) types.

Troubleshoot your network connection speed | Xbox Support

Troubleshoot your Xbox One network connection | Xbox Support

J'ai un soucis se code s'affiche mais pas moyen de savoir pourquoi cela s'affiche j'aimerai bien avoir une explication se problème.

[Translation - I have a problem getting code pops up but no way to know why this is displayed I would love to have an explanation to be trouble.]

Hey Heichou,

If you haven't already done so, go ahead and create your own thread detailing what is going on. This will ensure you receive the best possible support. Cheers