Cannot add family member using invitation, ask to leave family group

Question

When trying to add an account to my family group, I send the invitation, but when he tries to accept it, we are in a loop to confirm his account login in and then it tells him "you are already part of a family group, leave the group and the accept it", but the option to leave any family group does not exists

Answer 1

The message means the invited account is already in a different Microsoft family group. An account can only belong to one family group at a time, so it must leave (or be removed from) the existing group before it can accept your invitation.

Because the “leave family group” option is not visible, use these checks and workarounds:

1. Confirm which account is signed in
   • On the invited person’s device, go to https://family.microsoft.com and sign in with the exact Microsoft account that receives the family invitation.
   • If that account opens a Family page showing an existing family (organizers/members listed), that confirms it is already in a family group.
2. Try leaving the existing family group from the web
   • Still signed in at https://family.microsoft.com, open the family page.
   • If the account is an adult member, there should normally be an option to leave the family group or to manage members (for organizers).
   • If the account is a child account (under statutory age), it cannot leave on its own; an organizer of the current family must remove it instead.
3. Have the current organizer remove the account
   • Ask the organizer of the existing family group (who appears as Organizer on that family page) to sign in at https://family.microsoft.com.
   • They should open the family member list, select that member, and use the option to remove them from the family group.
   • Once removed, the invited account can go back to the invitation email/link and accept it to join the new family group.
4. If the account truly should not be in any family group
   • If no family is shown but the error persists, the account may still be flagged as part of a family in the backend.
   • In that case, the most reliable workaround is to:
     • Use a different Microsoft account that is not in any family group, or
     • Create a new Microsoft account for this person and invite that new account instead.
5. Re-send the invitation after leaving the old group
   • Once the member has left or been removed from the old family group, the organizer of the new family group should:
     • Go to https://family.microsoft.com and select Add a family member.
     • Enter the member’s email or phone, choose Member or Organizer, and send the invite again.
   • The invited person then uses the email link to accept and join the new family group.

This one-family-group limit also applies when sharing Microsoft 365 Family or Premium: if the invitee is already in another family group, they must leave it before joining the subscription owner’s family group.

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References:

• Add people to your family group
• Getting started with Microsoft Family Safety
• Share your Microsoft 365 Family or Premium subscription