Sending, receiving, and organizing email in Outlook.com
@Emre Ayaz said
My old email address ended in hotmail.com, I changed it to outlook.com
If you mean that you went to https://account.live.com/AddAssocId and created a new outlook.com alias
Then you went to https://account.live.com/names/manage and Removed the old hotmail.com alias
Then, I am sorry, but the hotmail.com alias is gone, you will not be able to receive or send using that email address and it can not be recovered.
This is a huge hole in Microsoft Account Security that many, people have fallen into. I realize that this will be of no help to you, but to perhaps keep someone else from falling into this same hole, I suggest that you Vote for and Comment on this Feature Request.
Remove/Delete Account Alias - Grace period to restore
https://feedbackportal.microsoft.com/feedback/idea/6ab87431-1b9a-f111-9b47-6045bd856709
(You must "Sign In" at the top right of the Feedback page before you can vote).