Where can I find the Microsoft family license number if I am not the person managing the account?

Hi, I'm John! I will help you with this.

Since you’re not the one managing the account, you won’t be able to see the subscription details directly. The best option would be to reach out to the family organizer (the person who set up the subscription). They can log into their Microsoft account online and check the subscription status or share the benefits with you.

Just to clarify, are you trying to install Office on your device or confirm that you’re part of the family subscription?

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Regards,

John J.D.