My primary email address is: *** Email address is removed for privacy ***.  I also have an outlook account that uses the same email address as my primary account @msn.com

I'm thinking of dropping or letting my msn account expire since I'm having so many problems like not letting me send pdf's or removing pdf's from emails I receive. MSN solution center is of no help at all. 

My question is do I add an alias to outlook as a primary account when I'm done with msn.

such as:  *** Email address is removed for privacy ***

Thanks much