Random Games Downloading

hey there

Thank you for reaching out to xbox forum. i am sorry you are having trouble the problem might be because if you have ever game shared with somone your xbox might still have it on the system memory and if not then once the games stop downloading just unistall
them all and leave the minecraft game on there ^^

Was there any other accounts that you had on that console that you gave to your sister that you were sharing that had that console set as its home console (either your own account or maybe a friends account)?

The only way that this would happen is if there was an account that had that console set as its home console (even doing a factory reset does not change which accounts have that console set as their home console). Whenever a console is set as an accounts
home console and a game is purchased on that account and it is setup in the settings of the console to automatically update the console and games then any game that is purchased on any account that has that console set as its home console those games will
automatically download to that console.

I'll give you an example.

Say the console is still set as your profiles home console and you purchase a new game and that consoles settings are set to automatically download updates and games then it would automatically download that new game to the console.

You said that you did not purchase these games then their may be a possibility if you were sharing with a friend that had that console set as their profiles home console and either they never set another console as their profiles home console or the home
console for the profile was not turned off on your sisters console.

Hi! Xbox has given away three free games as well as some DLC in what they called a Mixpot for anyone who watched part of their E3 Press conference! You can find more information here: https://blog.mixer.com/e3/

• Rare Replay– full game download. Mature game – will not be awarded to accounts for users under 17 or with family settings that block purchases.
• Halo Wars 2 Kinsano Leader Pack (with special bonus of
  
  3 Blitz Packs for Xbox One players)
• Minecraft Redstone Specialists Skin Pack (for Minecraft: Xbox One Edition)
• Halo Warthog in Forza Horizon 3 (unique vehicle not available in the in-game store)
• HAWKEN – Starter Pack
• No Time to Explain – full game download
• The Final Station – full game download. Mature game – will not be awarded to accounts for users under 17 or with family settings that block
  purchase

Oh yeah those are the ones. Wow im dumb. Thanks for answering.

No. You don't have to be signed into multiple consoles. You can't be signed into multiple consoles. Since his console would be set as your Home console, he can play whether you're signed in or not.