Managing personal Outlook.com account settings, security, and privacy
@GOKHAN OZCAN said
I accidentally removed [msn.com] aliases from my Microsoft account
It is gone and can not be recovered.
This is a huge hole in Microsoft Account Security that many, many, people have fallen into. There is a way to recover an alias that ends with outlook.com, but anything else (hotmail.com, msn.com) is gone. I am sorry.
I am willing to provide any information necessary to verify that I am the legitimate owner of the Microsoft account
Microsoft Account Security is an automated process. Microsoft Support Agents can not unlock an account, reset your password, or change any Security Settings no matter what documentation you can present.
All I can suggest is that you Vote for and Comment on this Feature Request. And hope that someone at Microsoft takes notice of the damage that this is causing.
Lost my hotmail account
https://feedbackportal.microsoft.com/feedback/idea/e6c05e3e-efef-f011-92b8-6045bd813264
(You must "Sign In" at the top right of the Feedback page before you can vote).