By signing in with a Microsoft account, the new MSN allows you to personalize your experience on MSN and to take that experience with you on every device, including the MSN website and the MSN apps. In general, personalization will sync across your devices.
Signing up for a Microsoft account is easy. Sign up for a Microsoft account.
To sign in to MSN just select Sign in at the top right hand side of the page and enter your Microsoft account information. You can also sign in to MSN by signing into Outlook, Office, OneDrive or other Microsoft services available on the MSN homepage.To sign out just select your account name at the top right hand side of the page and select sign out.