xbox multiplayer help

Here's a link so he can play with his friends PC Xbox and others too

https://support.xbox.com/en-AU/xbox-one/security/crossnetwork

Have you looked over the privacy and security settings that are set up on your son's account? https://support.microsoft.com/en-us...ety-and-privacy-settings-for-parents-and-kids

1. Sign in to your Xbox.
2. Press the Xbox button on your controller to open the guide, then go to System > Settings > Account.
3. Under Account, select Family settings > Manage family members.
4. Select the child whose settings you want to update.
5. Select Privacy & online safety, then choose default settings, or customize by selecting View details & customize.

first of all checks those who can invite you to match, (there is a configuration for only friends if if you don't already have them added you won't be able to play) another thing is nat you should be open and if you have an account with parental control
maybe some configuration of security don't let it

You can add me if you like, none of my friends have bought the Run yet, so I'm stuck too.

I assume you are inquiring why you can't connect.

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The answer is because your account is a free silver account, you need to upgrade to Gold for online gaming features.