Account blocked for violating terms of service.

Hello, Mike. Thanks for reaching out! My name is Lucas. I'm an Independent Advisor and a Microsoft user just like you. I'll be happy to assist you today.

By block do you mean a Xbox Live suspension - issued by the Xbox enforcement team (https://enforcement.xbox.com) - or a Microsoft account lock (Account has been locked), that asks you to change your account password or associate an alternate email address or phone number to the account?

If it was a Microsoft account lock, no one here can say for sure what might have caused it. But sometimes if you create an account and do not associate a phone number or email address to it, or sign in to it using a VPN or from too many devices, it can trigger an automated response from the Microsoft server. This is usually an automated response triggered by unusual sign in activities or a behavior that might violate the Microsoft Terms of Use. It is not manually done by a Microsoft employee.

Feel free to ask back any questions.

Game sharing outside your physical household is a violation of terms of service and can lead to account and console bans.

Activision specifically blocks sharing for this reason.

Game sharing outside your physical household is a violation of terms of service and can lead to account and hardware bans

Games like those block sharing for this exact reason

Game sharing outside of your physical household is a violation of terms of service and can lead to accounting hardware bands. Game publishers have the option to block game sharing of any title

Report him and block him. As long as you haven't done anything to violate the code of conduct/terms of service, you'll be fine.