Help with Windows Live IDs?

[unknown]

Okay, so I have two email addresses (let's just say they are):

emailnumber1@yahoo.com

and

emailnumber2@live.co.uk


I can sign into my Yahoo email with the first one, but not the second. I can sign into Windows Live with both. However, the emails in the inbox of number 1 (on Windows Live) are different to the emails in the inbox when signed into Yahoo.

I'm kinda confused. Why is this? I'm sorry if I have explained this poorly. Are either of these emails considered Windows Live IDs? I used the first one with my Windows 8 computer for a time. I also use it for Xbox Live.

[Sarah]

Because live is different to yahoo. And with live you can connect more than 1 account to it to log in.