Microsoft Outlook is available in several languages and allows you to easily and seamlessly switch between the languages of your choice. By default, the application will run in the language setting of your computer, but you can change these settings to your liking in just a few simple steps. This quick tutorial will show you how to change your language settings on the application.
From your Outlook.com home-screen, go to Settings > More mail settings:
Next, go to Customizing Outlook > Language.
Select the language of your choice from the list and then click Save to apply your settings: