Preventing Two Xbox Consoles from Signing In Simultaneously: Not Possible (Workarounds Inside)

Xbox Live does not offer a setting to block simultaneous sign-ins on the same account. The service is designed to allow multiple devices (console, PC, phone) to be logged in at once.

Workarounds

• Create separate accounts: Each person gets their own gamertag, friends list, achievements, and subscriptions. This is the cleanest solution.
• Use Family Settings: If managing children, set screen-time limits and content filters per child account.
• Manually sign out: Before starting a session, sign out on the other console (press Xbox button → Profile → Sign out).
• Guest account: For occasional local multiplayer, use a temporary guest profile instead of your main account.

Note: Separate accounts require separate Xbox Live Gold / Game Pass subscriptions for online features.