I created child accounts for my children. I then went to their email account and open the email. I click on the 'accept the invite' link and it takes me to a page where I have a choice to 'Join the family as a child'. I click on the button to 'Sign In and Join' which takes me to a window with Microsoft written on top, my child's email address underneath and then a request for a password. We have not yet set up a Microsoft password to log in, we are only first accepting the invite, so how do I actually join? The gmail password we have does not work, I tried resetting the password but it says the password has been used before. I tried using a different gmail account and it says 'looks like this isn't a microsoft account' . Since I can't get my 2003 computer back, I hope someone here can help me figure out how to set up the child accounts on my Windows10pro Dell PC