Device ban

Hey there DatedEmpress501.

Unfortunately if your Xbox One has received a console ban regardless of the account that committed the bannable offense. For more details on how console bans and suspensions work, please check out
Enforcement.xbox.com.

We're unable to provide any further support on this, thanks for your understanding and patience.

You don't get console banned for "no reason"

That exact thing has happened at least once before. So why are you so sure that it could not happen again?

Did you buy your console brand new from an authorized retailer listed by Microsoft? If not, then there's no guarantee that your used console you decided to buy just to save some money, has been banned due to the previous user of that console. Yes getting
it the official way new through an authorized retailer is more expensive and you'll end up paying the full RRP or near that, it gives you 12 months warranty, and no console ban (unless it's the fault of the customer).

Consoles with modded hardware or unofficial firmware not from Microsoft, get permanently banned. The Xbox Live service does random checks of your console when the console connects to the service. If it doesn't have official firmware running on it, it will
get permanently banned. Also if you reverse engineer or hack games while playing them and connected to Xbox Live, Microsoft reserves the right to ban that console AND your account.

You don't get console banned for "no reason"

Read the email that was sent to the address linked to your account.It will tell you why.

You can find out about console bans
here

Device bans are not issued lightly, and occur when a particular Xbox console or Xbox on Windows device is used to violate the Code of Conduct in an egregious or repeated manner. Once a device ban occurs, no account can connect to the Xbox Live service from
the affected device. Given the severity of this action we take each device ban extremely seriously, and only take action after a lengthy investigation.

Upon receiving a device ban, any account that attempts to sign in to the Xbox Live service will receive a notification. The specific content of the notification depends on the type of device that received the ban.

Xbox One:

“Your console is banned. This console has been banned for Terms of Use violations. To protect the Xbox service and its members, Microsoft does not provide details about specific console bans. For more information out console bans, visit xbox.com/xboxone/consoleban.”

The grievous nature of the device ban doesn't allows for a file review at this moment. Please note that banning an Xbox console or Xbox on Windows device does not disrupt the underlying functionality of the device, and it can continue to be used offline
following the ban.