Purchased XBOX game. Downloaded it on console under son's account. Daughter is not able...

Thank you!!! That worked.

Your son would need to set the console as his Home console in order to share the game. https://beta.support.xbox.com/help/hardware-network/console/my-home-xbox

I have this same issue, except that my brother in law bought Halo first and downloaded it to my xbox.

Wanting to play the game myself I purchased it last night, but it won't download and says I need to purchase it again.

Yes, I confirmed it is in my purchase history, and when I look on my Microsoft account from my phone it states that I own it.

You'll want to create a new thread detailing your issue for proper assistance.

if you buy Sims 4 for your daughter on her account it won't be affected by her console being set as the Home Xbox for your son as it works off her age and any permissions set on her account, not his.

you can set your son's xbox as the Home console for both your account and your daughter's and then set your daughter's xbox to sign you in automatically when she turns it on and both will be able to use your Xbox Live

if you do this I recommend setting a Pass Key for purchases so she doesn't accidentally make any in game purchases. this link explains how to set that up.

https://support.xbox.com/en-US/my-account/security/passkey-purchases

so in summary;

make your sons Xbox Home for your account and your daughters.

set your daughter's xbox as your son's Home xbox and to automatically sign you in.

set a passkey on purchases on your account on your daughter's xbox.

this will give them both access to your Live Gold subscription and digital games as well as access to each other's games.

when your Gold subscription expires you can then either renew it on your account or purchase it for either your son or daughter and they will both be able to play online with just the 1 subscription.

hope this helps