Hey there Raoulh,
If you have recently signed up, your account will be in the Outlook Format, so in WLM and the Window Mail apps, you should be able to select "Outlook account" and enter your details and should work without a problem.
If you have recently signed up, your account will be in the Outlook Format, so in WLM and the Window Mail apps, you should be able to select "Outlook account" and enter your details and should work without a problem.