Press Start+G or search the start menu for the Xbox Game Bar. On the top strip menu, the last icon is Settings. Click that, then Accounts on the left side of the settings menu. You can sign in from there.
Press Start+G or search the start menu for the Xbox Game Bar. On the top strip menu, the last icon is Settings. Click that, then Accounts on the left side of the settings menu. You can sign in from there.